[ CAS No. 13070-45-6 ] {[proInfo.proName]}

Name: 13070-45-6|6-Methoxy-1,2,3,4-tetrahydrocarbazole|97%
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Quality Control of [ 13070-45-6 ]

COA NMR CNMR HPLC LC-MS

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Product Details of [ 13070-45-6 ]

CAS No. :	13070-45-6	MDL No. :	MFCD06662245
Formula :	C₁₃H₁₅NO	Boiling Point :	-
Linear Structure Formula :	-	InChI Key :	LJUKCUCBMZNDOR-UHFFFAOYSA-N
M.W :	201.26	Pubchem ID :	10798130
Synonyms :

Safety of [ 13070-45-6 ]

Signal Word:	Warning	Class:	N/A
Precautionary Statements:	P280-P305+P351+P338	UN#:	N/A
Hazard Statements:	H302-H317	Packing Group:	N/A
GHS Pictogram:

Application In Synthesis of [ 13070-45-6 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

Downstream synthetic route of [ 13070-45-6 ]

[ 13070-45-6 ] Synthesis Path-Downstream 1~101

1
[ 93-59-4 ]
[ 13070-45-6 ]
6-methoxy-1,2,3,4-tetrahydro-carbazol-4a-yl hydroperoxide [ No CAS ]

Reference： [1]Journal of the Chemical Society,1952,p. 4946,4949

2
[ 13070-45-6 ]
[ 71-43-2 ]
6-methoxy-1,2,3,4-tetrahydro-carbazol-4a-yl hydroperoxide [ No CAS ]

Reference： [1]Journal of the Chemical Society,1952,p. 4946,4949

3
[ 13070-45-6 ]
[ 18992-85-3 ]

Yield	Reaction Conditions	Operation in experiment
92%	With copper(II) choride dihydrate; In dimethyl sulfoxide; at 100℃; for 7h;	General procedure: A mixture of starting compound (2.69 mmol), CuCl2.2H2O (10 mol %) in DMSO (5 mL) stirred at 100 C. The reaction progress was monitored by thin layer chromatography (PMA was used for stain solution). The reaction mixture was poured into ice cold water. The crude product was purified by column chromatography using ethyl acetate and petroleum ether as eluent to afford carbazoles.
53%	With palladium 10% on activated carbon; In water; for 48h;Reflux;	To a solution of compound 6 (0.409 g, 2.03 mmol) in p-cymene and H2O (5 mL, 4:1) 10 % Pd/C (0.206 g) was added and the mixture heated under reflux for 48 h. After cooling it was filtered over Celite and washed with boiling EtOAc. The filtrate was evaporated to dryness, and the product was obtained as an oil. Yield: 0.210 g (1.07 mmol, 53 %). 1H NMR (300 MHz, CDCl3): delta 8.04 (d, 1H ,J = 8.1 Hz, H-5), 7.57 (d, 1H, J = 2.4 Hz, H-4), 7.41-7.40 (m, 2H, H-7 and H-8), 7.34 (d, 1H, J = 8.7 Hz, H-1), 7.24-7.20 (m, 1H, H-6), 7.07 (dd, 1H, J = 9.0 and 2.4 Hz, H-2), 3.94 (s, 3H, OCH3) ppm. NH was not observed.

Reference： [1]Tetrahedron Letters,2018,vol. 59,p. 2145 - 2149
[2]Organic and Biomolecular Chemistry,2014,vol. 12,p. 4832 - 4836
[3]European Journal of Medicinal Chemistry,2014,vol. 87,p. 298 - 305
[4]Justus Liebigs Annalen der Chemie,1908,vol. 359,p. 76
[5]Journal of the Chemical Society,1952,p. 2789
[6]Journal of Organic Chemistry,1959,vol. 24,p. 478,481
[7]Journal of the Chemical Society. Perkin transactions I,1980,p. 1512 - 1515
[8]European Journal of Organic Chemistry,2002,p. 1952 - 1955

4
[ 13070-45-6 ]
[ 75457-24-8 ]

Reference： [1]Journal of the Chemical Society,1957,p. 1115,1116
[2]Journal of the Chemical Society,1957,p. 1115,1116

5
[ 13070-45-6 ]
[ 13314-76-6 ]

Reference： [1]Tetrahedron,1994,vol. 50,p. 13433 - 13448
[2]Journal of the Chemical Society,1952,p. 2789
[3]Journal of the Chemical Society,1952,p. 4946,4949

6
[ 13070-45-6 ]
6-methoxy-1,2,3,4-tetrahydro-carbazol-4a-yl hydroperoxide [ No CAS ]

Reference： [1]Journal of the Chemical Society,1952,p. 4946,4949

7
[ 13070-45-6 ]
(6-methoxy-1,2,3,4-tetrahydro-9H-carbazol-9-yl)(phenyl)methanone [ No CAS ]

Reference： [1]Journal of the Chemical Society,1934,p. 1524,1528

8
[ 13070-45-6 ]
[ 108-24-7 ]
[ 83696-91-7 ]

Reference： [1]Chemical and pharmaceutical bulletin,1988,vol. 36,p. 3770 - 3779
[2]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916

9
[ 13070-45-6 ]
[ 77-78-1 ]
[ 3382-44-3 ]

Reference： [1]Journal of Medicinal Chemistry,1997,vol. 40,p. 1201 - 1210
[2]Tetrahedron,1994,vol. 50,p. 11903 - 11920

10
[ 13070-45-6 ]
[ 407-25-0 ]
[ 83696-92-8 ]

Reference： [1]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916

11
[ 13070-45-6 ]
[ 75457-24-8 ]

Reference： [1]Journal of Organic Chemistry,1981,vol. 46,p. 355 - 360

12
[ 3449-49-8 ]
[ 13070-45-6 ]

Reference： [1]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916

13
[ 108-94-1 ]
[ 3471-32-7 ]
[ 13070-45-6 ]

Yield	Reaction Conditions	Operation in experiment
85%	With Amberlite IR 120; In ethanol; at 80℃; for 10h;	General procedure: A mixture of the carbonyl compound (5, 1.0 mmol), arylhydrazine (6, 1.2 mmol), and the solid acid (7, Amberlite, 1.5 g, obtained from Aldrich Chemical Co.) was refluxed in absolute ethanol (10 ml) for 8 h. The reaction was monitored by thin-layer chromatography(TLC), and upon completion the mixture was cooled to room temperature, the catalyst filtered off, and the product was washed thoroughly with ethylacetate (30 ml). The combined organics were washed with water, dried (Na2SO4), and concentrated in vacuo. The resulting residue was chromatographed on a silicagel column eluting with ethylacetate-hexane mixtures to obtain the purified indole (8). This was fully characterized by infrared, 400-MHz 1H NMR, high-resolution mass spectrometry, and melting point (solids).
82%	With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; In ethyl acetate; at 110℃; for 0.166667h;Microwave irradiation; Sealed vessel;	General procedure: T3P (50% in EtOAc) (0.55-0.68 mmol) was added to a mixture of hydrazine (59 mg, 0.55 mmol) and ketone/aldehyde (0.55 mmol) in a microwave vial. The reaction volume was then made up to 0.5 mL with EtOAc and the vessel was sealed under air. The mixture was heated under microwave irradiation (Biotage Initiator) at 100-150 C for 5-15 min. The solvent was evaporated under reduced pressure and the oily residue was purified by filtration through a plug of silica gel (eluent: isohexane/EtOAc, 8:2) to yield the desired indole or tetrahydrocarbazole. When the reaction was conducted on a 5 mmol scale the product (3a) was purified by precipitation from acetone/water.
71%	With acetic acid; for 4.5h;Reflux;	To a solution of cyclohexanone (0.30 mL, 2.86 mmol) in glacial acetic acid (1 mL), methyl 4-methoxyphenyl hydrazine (0.501 g, 2.87 mmol) was added over 1 h. The mixture was refluxed for 3.5 h and left stirring until reaching room temperature. It was then cooled in ice for 20 min and then 75 % (v/v) aqueous MeOH (4 mL) was added. The solid formed was filtered and washed with 12 mL of the same aqueous methanol to give a beige solid. Yield: 0.409 g (2.03 mmol, 71 %). mp 93-95 C. 1H NMR (300 MHz, CDCl3): delta 7.56 (sbr, 1H, NH), 7.18 (d, 1H, J = 9.0 Hz, H-1), 6.93 (d, 1H, J = 2.4 Hz, H-4), 6.77 (dd, 1H, J = 8.7 and 2.4 Hz, H-2), 3.86 (s, 3H, OCH3), 2.72-2.68 (m, 4H, H-6 and H-7), 1.90-1.89 (m, 4H, H-5 and H-8) ppm. 13C NMR (75.4 MHz, CDCl3): delta 153.84 (C-3), 153.06 (C-8a), 130.68 (C-9a), 128.17 (C-4a), 110.90 (C-1), 110.50 (C-2), 110.02 (C-4b), 100.23 (C-4), 55.95 (OCH3), 23.33 (C-6 or C-7), 23.18 (C-5 and C-8), 20.94 (C-6 or C-7) ppm. Anal. calcd for C13H15NO: C, 77.91; H, 7.223; N, 6.983 %; found: C, 77.58; H, 7.51; N, 6.96 %.

With hydrogenchloride; In water; at 50 - 60℃; for 5h;

General procedure: Substituted phenyl hydrazine (14 mmol) was solved in the mixture of concentrated hydrochloric acid and water (50 mL, 1:20) and then ketone (16.8 mmol) was added dropwise at rt. After that, the mixture was stirred for more than 5 h at 50-60 . When the reaction cooled to rt, some rice shape solids appeared in the system. The mixture was filtered and the solid was washed with enough water until neutral.T he crude product was recrystallized in hexane to afford 1k-1q in 72-95% yield.

Reference： [1]Organic Letters,2012,vol. 14,p. 4568 - 4571
[2]Organic and Biomolecular Chemistry,2014,vol. 12,p. 4832 - 4836
[3]Synthetic Communications,2015,vol. 45,p. 1018 - 1022
[4]Tetrahedron Letters,2011,vol. 52,p. 4417 - 4420
[5]European Journal of Medicinal Chemistry,2014,vol. 87,p. 298 - 305
[6]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916
[7]Chemistry of Heterocyclic Compounds,1988,vol. 24,p. 154 - 158
Khimiya Geterotsiklicheskikh Soedinenii,1988,vol. 24,p. 188 - 192
[8]Tetrahedron,2013,vol. 69,p. 6839 - 6844

14
[ 931-17-9 ]
[ 104-94-9 ]
[ 13070-45-6 ]

Reference： [1]RSC Advances,2013,vol. 3,p. 6022 - 6029
[2]Journal of Organic Chemistry,1987,vol. 52,p. 1673 - 1680

15
[ 35331-82-9 ]
[ 13070-45-6 ]

Reference： [1]Tetrahedron Letters,1993,vol. 34,p. 6889 - 6892
[2]Tetrahedron,1994,vol. 50,p. 11903 - 11920
[3]Journal of Medicinal Chemistry,1997,vol. 40,p. 1201 - 1210
[4]Tetrahedron,1994,vol. 50,p. 11903 - 11920

16
[ 13070-45-6 ]
[ 106-89-8 ]
[ 123063-72-9 ]

Reference： [1]Il Farmaco,1989,vol. 44,p. 483 - 493

17
[ 13070-45-6 ]
[ 5809-23-4 ]
3-(Diethylamino)-8,9,10,11-tetrahydrospiro<<1>benzopyrano<3,2-b>carbazole-13(7H),1'(3'H)-isobenzofuran>-3'-one [ No CAS ]

Reference： [1]Journal of Organic Chemistry,1994,vol. 59,p. 8304 - 8306

18
[ 13070-45-6 ]
[ 75-08-1 ]
6-ethylthio-1,2,3,4-tetrahydrocarbazole [ No CAS ]

Reference： [1]Tetrahedron,1994,vol. 50,p. 13433 - 13448

20
[ 13070-45-6 ]
lead oxide [ No CAS ]
[ 18992-85-3 ]

Reference： [1]Justus Liebigs Annalen der Chemie,1908,vol. 359,p. 76

Yield	Reaction Conditions	Operation in experiment
78%	With 4-(dimethylamino)-1-pentylpyridin-1-ium fluoride; zinc(II) chloride; In ethanol; at 78 - 80℃;Inert atmosphere;	General procedure: In a general procedure, an oven dried round bottomed flask was charged with corresponding phenyl hydrazine hydrochloride (1 mmol, 1 equiv.) and ethanol (3 mL). To the resulting solution corresponding 43uinolone43one/methyl cyclohxanone (1 mmol, 1 equiv.) and 4-(dimethylamino)-1-pentylpyridin-1-ium fluoride (2) [or (II)] (0.2 mmol, 0.2 equiv.) was added at room temperature and mixture was heated at reflux (78-80 C.) under nitrogen atmosphere. The consumption of starting material was monitored by thin layered chromatography by using eluents ethyl acetate/hexane (3:7). The crude reaction mixture was directly purified by silica gel column chromatography by using eluents in gradient eluents EtOAc/Hexane (1:9 to 1:1) to get the corresponding pure products (6a-h) in different yields.

22
(+-)-2-<4-methoxy-anilino>-cyclohexanone [ No CAS ]
[ 13070-45-6 ]

Reference： [1]Journal of Organic Chemistry,1959,vol. 24,p. 478,481

23
[ 108-94-1 ]
4-methoxy-phenylhydrazine hydrochloride [ No CAS ]
[ 13070-45-6 ]

Reference： [1]Justus Liebigs Annalen der Chemie,1908,vol. 359,p. 76

24
cyclohexanone-<4-methoxy-phenylhydrazone> [ No CAS ]
[ 13070-45-6 ]

Reference： [1]Journal of the Chemical Society,1952,p. 2789

25
[ 108-94-1 ]
[ 380383-75-5 ]
[ 13070-45-6 ]

Reference： [1]Tetrahedron Letters,2004,vol. 45,p. 1857 - 1859

26
[ 13070-45-6 ]
9-methoxy-3,4,5,6-tetrahydro-1H-benzo[b]azonine-2,7-dione [ No CAS ]

Reference： [1]Tetrahedron Letters,2004,vol. 45,p. 8061 - 8064

27
[ 1056477-06-5 ]
[ 104-94-9 ]
[ 13070-45-6 ]

Reference： [1]Synthetic Communications,2006,vol. 36,p. 1485 - 1494

28
[ 19501-58-7 ]
[ 1122-60-7 ]
[ 13070-45-6 ]

Reference： [1]Tetrahedron Letters,2007,vol. 48,p. 1809 - 1811

29
[ 13070-45-6 ]
[ 7384-07-8 ]

Reference： [1]European Journal of Organic Chemistry,2002,p. 1952 - 1955
[2]Journal of the Chemical Society,1952,p. 2789
[3]Journal of the Chemical Society,1952,p. 2789

30
[ 13070-45-6 ]
[ 475273-53-1 ]

Reference： [1]European Journal of Organic Chemistry,2002,p. 1952 - 1955

31
[ 13070-45-6 ]
9H,9'H-[2,4']bicarbazolyl-3,3'-diol [ No CAS ]

Reference： [1]European Journal of Organic Chemistry,2002,p. 1952 - 1955

32
[ 13070-45-6 ]
(S)-(-)-9H,9'H-[4,4']bicarbazole-3,3'-diol [ No CAS ]

Reference： [1]European Journal of Organic Chemistry,2002,p. 1952 - 1955

33
[ 13070-45-6 ]
Carbonic acid (1S,2R,5S)-2-isopropyl-5-methyl-cyclohexyl ester 3'-((1S,2R,5S)-2-isopropyl-5-methyl-cyclohexyloxycarbonyloxy)-9H,9'H-[4,4']bicarbazolyl-3-yl ester [ No CAS ]

Reference： [1]European Journal of Organic Chemistry,2002,p. 1952 - 1955

34
[ 13070-45-6 ]
Carbonic acid (1R,2S,5R)-2-isopropyl-5-methyl-cyclohexyl ester 3'-((1R,2S,5R)-2-isopropyl-5-methyl-cyclohexyloxycarbonyloxy)-9H,9'H-[4,4']bicarbazolyl-3-yl ester [ No CAS ]

Reference： [1]European Journal of Organic Chemistry,2002,p. 1952 - 1955

35
[ 13070-45-6 ]
[ 13314-77-7 ]

Reference： [1]Journal of Medicinal Chemistry,1997,vol. 40,p. 1201 - 1210

36
[ 13070-45-6 ]
6-ethylthio-1,2,3,4-tetrahydro-9-methylcarbazole [ No CAS ]

Reference： [1]Journal of Medicinal Chemistry,1997,vol. 40,p. 1201 - 1210

37
[ 108-94-1 ]
[ 13070-45-6 ]

Reference： [1]Tetrahedron,1994,vol. 50,p. 11903 - 11920

38
[ 5345-54-0 ]
[ 13070-45-6 ]

Reference： [1]Tetrahedron,1994,vol. 50,p. 11903 - 11920

39
[ 13070-45-6 ]
1-Diethylamino-3-(6-methoxy-1,2,3,4-tetrahydro-carbazol-9-yl)-propan-2-ol; compound with (E)-but-2-enedioic acid [ No CAS ]

Reference： [1]Il Farmaco,1989,vol. 44,p. 483 - 493

40
[ 13070-45-6 ]
1-(6-Methoxy-1,2,3,4-tetrahydro-carbazol-9-yl)-3-piperidin-1-yl-propan-2-ol; compound with (E)-but-2-enedioic acid [ No CAS ]

Reference： [1]Il Farmaco,1989,vol. 44,p. 483 - 493

41
[ 13070-45-6 ]
1-(6-Methoxy-1,2,3,4-tetrahydro-carbazol-9-yl)-3-morpholin-4-yl-propan-2-ol; compound with (E)-but-2-enedioic acid [ No CAS ]

Reference： [1]Il Farmaco,1989,vol. 44,p. 483 - 493

42
[ 13070-45-6 ]
[ 120400-60-4 ]

Reference： [1]Chemical and pharmaceutical bulletin,1988,vol. 36,p. 3770 - 3779

43
[ 83696-90-6 ]
[ 13070-45-6 ]

Reference： [1]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916

44
[ 104-94-9 ]
optically inactive bis-<2-chloro-propyl>-<2>naphthyl-amine [ No CAS ]
[ 13070-45-6 ]

Reference： [1]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916

45
[ 83696-89-3 ]
[ 13070-45-6 ]

Reference： [1]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916
[2]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916

46
[ 83706-89-2 ]
[ 13070-45-6 ]

Reference： [1]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916
[2]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916

47
[ 83706-90-5 ]
[ 13070-45-6 ]

Reference： [1]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916
[2]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916

48
[ 83696-88-2 ]
[ 13070-45-6 ]

Reference： [1]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916
[2]Journal of the Chemical Society. Perkin transactions II,1982,p. 909 - 916

49
[ 13070-45-6 ]
[ 108839-93-6 ]

Reference： [1]Journal of the Chemical Society,1957,p. 1115,1116

50
[ 19501-58-7 ]
[ 108-94-1 ]
[ 13070-45-6 ]

Yield	Reaction Conditions	Operation in experiment
97%	With 1,3,5-trichloro-2,4,6-triazine; In ethanol; at 80℃; for 2h;	General procedure: A mixture ofphenyl hydrazines.HCl (1 mmol), ketones (1 mmol) andTCT (0.1 mmol) in distilled ethanol was heated to 80 C. After 2 h the startingmaterial was absent as monitored by TLC. The reaction mixture was cooled toambient temperature and diluted with water. The product was extracted intoethyl acetate (5x3 mL). The combined organiclayer was dried over anhydrous Na2SO4 and concentrated toresidue. Thus obtained residue was purified by column chromatography (gradientof 5-10 % EtOAc in Petroleum ether) to yield indole ortetrahydrocarbazole or tetrahydrocarboline derivatives (3a-3x).
95%	With 4-methylbenzenesulfonic acid-based ionic liquid supported on silica gel; In ethanol; at 20℃; for 4h;	General procedure: To a solution of phenylhydrazine (10 mmol) and ketone or aldehyde (10 mmol) in ethanol (15 mL) was added catalyst IL-SO3H-SiO2 (1.2 g). The mixture was allowed to stirringat room temperature for a period time specified in Table 2.The reaction was monitored by TLC and GC. After completionof the reaction, the catalyst was recovered by filtration.Evaporation of the solvent under reduced pressuregave the crude product. Further purification was achievedby flash column chromatography on a silica gel to give thedesired product. The recovered catalyst was dried andreused for the next run. Spectroscopic data for selectedproducts is as follows.
89%	With acetic acid; for 8h;Reflux;	General procedure: A substituted phenyl hydrazine. HCl (4.61 mmol) was added to the mixture of cyclohexanone (4.61 mmol) and acetic acid (15 ml) portion wise for 30 min. The mixture was then refluxed for 8 h and progress of reaction was monitored by thin layer chromatography. The reaction mixture was cooled and poured into crushed ice. The solid product was separated, filtered, dried and recrystallized from the methanol solvent.

79%

With acetic acid; at 80℃; for 1h;

EXAMPLE 16; Methyl 2,3,4,9-tetrahvdro-lff-carbazol-6-vI ether [Compound 161; 4-Methoxyhydrazine hydrochloride (1.746 g, 0.01 mol) was suspended in acetic acid (10 mL) and heated to 8O0C, with stirring. Cyclohexanone (1.00 g, 0.01 mol) was added dropwise, with stirring. The reaction mixture was heated for 1 hour, cooled to room temperature and then kept in the fridge overnight. The colour of the reaction mixture changed to dark-brown. The solid material was filtered and washed with a small amount of acetic acid. More material was recovered from the filtrate. The combined solids were dried under reduced pressure to give an off-white crystalline material (1.596 g, 79%), mpl08-110C [Clark, D.W.; Jackson, A.H.; Prasitrhoan, N. and Shannon, P.V.R., J.Chem.Soc.Perkin Trans.II, 1982, 909-916, mp94-96C], RF=0.50 (ethyl acetate/n-hexane 1A). IR (KBr): 3389, 2915, 2845, 1622, 1589, 1482, 1434, 1218, 1134, 1028, 826, 798 cm.-1 1H NMR (DMSO-d6): 1O.39(1H, s), 7.11(1H, d, J=8.7Hz), EPO <DP n="29"/>6.81(1H5 d5 J=2.4Hz), 6.62(1H, dd, J=2.4 & 8.6Hz)5 3.73(3H5 s), 2.67(2H, t, J=5.4Hz), 2.57(1H5 1, J=5.8Hz), 1.82-1.77(4H5 m).

Reference： [1]Tetrahedron Letters,2013,vol. 54,p. 5591 - 5596
[2]Catalysis Letters,2016,vol. 146,p. 968 - 976
[3]Tetrahedron Letters,2018,vol. 59,p. 2145 - 2149
[4]Synthetic Communications,2009,vol. 39,p. 158 - 165
[5]Phosphorus, Sulfur and Silicon and the Related Elements,2009,vol. 184,p. 1843 - 1853
[6]Letters in Organic Chemistry,2009,vol. 6,p. 159 - 164
[7]Organic and Biomolecular Chemistry,2016,vol. 14,p. 9868 - 9873
[8]Journal of Heterocyclic Chemistry,2011,vol. 48,p. 1095 - 1102
[9]Advanced Synthesis and Catalysis,2019,vol. 361,p. 432 - 435
[10]Patent: WO2006/82409,2006,A2 .Location in patent: Page/Page column 26-27
[11]Molecular Diversity,2020,vol. 24,p. 211 - 223
[12]Angewandte Chemie - International Edition,2018,vol. 57,p. 15891 - 15895
Angew. Chem.,2018,vol. 130,p. 16118 - 16122,5

51
[ 13070-45-6 ]
[ 35466-83-2 ]
[ 1029578-16-2 ]

Reference： [1]Organic Letters,2008,vol. 10,p. 2381 - 2384

52
[ 108-85-0 ]
[ 459-64-3 ]
[ 13070-45-6 ]