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CAS No. :1314319-10-2 MDL No. :
Formula : C21H29BrN2O2 Boiling Point : -
Linear Structure Formula :- InChI Key :-
M.W : 421.37 Pubchem ID :-
Synonyms :

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* 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 [ 1314319-10-2 ]

[ 1314319-10-2 ] Synthesis Path-Downstream   1~8

  • 1
  • [ 896464-16-7 ]
  • [ 34598-49-7 ]
  • [ 1314319-10-2 ]
  • tert-butyl 2-((1S)-5-bromo-2,3-dihydro-1H-inden-1-yl)-2,7-diazaspiro[3.5]nonane-7-carboxylate [ No CAS ]
  • 2
  • [ 7554-65-6 ]
  • [ 1314319-10-2 ]
  • [ 1334785-22-6 ]
YieldReaction ConditionsOperation in experiment
79% With 5-(di-tert-butylphosphino)-1?, 3?, 5?-triphenyl-1?H-[1,4?]bipyrazole; caesium carbonate;tris-(dibenzylideneacetone)dipalladium(0); In 1,4-dioxane; at 100℃;Inert atmosphere; Preparation of 2-[(R)-5-(4-Methyl-pyrazol-1-yl)-indan-1-yl]-2,7-diaza-spiro[3.5]honane-7-carboxylic acid tert-butyl ester (8-1a) In a sealable reaction tube was combined 2-(R)-5-bromo-indan-1-yl)-2,7-diaza-spiro[3.5]nonane-7-carboxylic acid tert-butyl ester (3-1a, 300 mg, 0.71 mmol), <strong>[7554-65-6]4-methyl-1H-pyrazole</strong> (88 mg, 1.07 mmol), tris(dibenzylideneacetone)dipalladium (65 mg, 0.071 mmol), 5-(di-tert-butyl-phosphanyl)-1',3',5'-triphenyl-1'H-[1,4']bipyrazolyl (72 mg, 0.14 mmol), cesium carbonate (377 mg, 1.07 mmol) and a stir bar. Anhydrous 1,4-dioxane (3 mL) was added and the mixture was purged with nitrogen for 10 minutes. The reaction was sealed and heated at 100 C. overnight. The reaction was cooled to room temperature, opened, and diluted with 150 mL ethyl acetate. The organic solution was washed with 100 mL water, dried (MgSO4), filtered through a plug of Celite and concentrated in vacuo to give a yellow oil. Purification on an ISCO (Teledyne Isco Inc., Lincoln Nebr.) silica column eluting with a 0-100% ethyl acetate in heptanes gradient provided 239 mg (79%) of the title compound (8-1a) as a yellow solid. MS (ES+) 423.0 (M+H)+. 1H NMR (CDCl3) delta 1.42 (s, 9H), 1.62-1.70 (m, 4H), 1.85-1.96 (m, 1H), 2.09-2.16 (m, 4H), 2.81 (dd, 1H), 3.02 (dd, 1H), 3.06-3.15 (m, 4H), 3.22-3.35 (m, 4H), 3.87-3.91 (m, 1H), 7.27 (d, 1H), 7.39 (dd, 1H), 7.45-7.51 (m, 2H), 7.63 (s, 1H).
With 5-(di-tert-butylphosphino)-1?, 3?, 5?-triphenyl-1?H-[1,4?]bipyrazole; tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; In 1,4-dioxane; at 100℃; for 18h;Inert atmosphere; Sealed tube; General procedure: In a sealable reaction tube was combined tert-butyl 2-[(R)-5-bromo-2,3-dihydro-1H-inden-1-yl]-2,7-diazaspiro[3.5]nonane-7-carboxylate 3 (300 mg,0.71 mmol), <strong>[7554-65-6]4-methyl-1H-pyrazole</strong> 7b (88 mg, 1.07 mmol), tris(dibenzylideneacetone)dipalladium (65 mg, 0.071 mmol), 5-(di-tert-butyl-phosphanyl)-1',3',5'-triphenyl-1'H-[1,4']bipyrazolyl (72 mg, 0.14 mmol), and cesium carbonate (377 mg, 1.07 mmol). Anhydrous 1,4-dioxane (3 mL) was added and the mixture was purged with nitrogen for 10 min. The reaction was sealed and heated at 100 C overnight. The reaction was cooled to room temperature, and diluted with 150 mL of ethyl acetate. The organic solution was washed with water (100 mL), dried (MgSO4), filtered through a plug of Celite and concentrated under reduced pressure to give a yellow oil. The crude product was purified by silica gel chromatography eluting with 0100% ethyl acetate in heptanes to give 8b (239 mg, 79%) as a yellow solid. 1H NMR (500 MHz, CdCl3) 7.63 (s, 1 H) 7.517.45 (m, 2 H), 7.39 (dd, 1 H), 7.27 (d, 1 H), 3.913.87 (m, 1 H), 3.353.22 (m, 4 H), 3.153.06 (m, 4 H), 3.02 (dd, 1 H), 2.81 (dd, 1 H), 2.162.09 (m, 4 H), 1.961.85 (m, 1 H), 1.701.62 (m, 4 H), 1.42 (s, 9 H). MS (ESI): m/z 423.0 (M+H)+.
  • 3
  • [ 1314319-10-2 ]
  • [ 123088-59-5 ]
  • [ 1334785-10-2 ]
YieldReaction ConditionsOperation in experiment
91% With diisopropylamine;trisodium tris(3-sulfophenyl)phosphine; palladium diacetate; In water; acetonitrile; at 90℃; for 2h; Preparation of 2-[(R)-5-(4-Carbamoyl-phenyl)-indan-1-yl]-2,7-diazaspiro[3.5]nonane-7-carboxylic acid tert-butyl ester (4-1a) 2-((R)-5-Bromo-indan-1-yl)-2,7-diaza-spiro[3.5]nonane-7-carboxylic acid tert-butyl ester (3-1a, 500 mg, 1.19 mmol), <strong>[123088-59-5]4-carbamoylphenylboronic acid</strong> (587 mg, 3.56 mmol), Pd(OAc)2 (14 mg, 0.06 mmol) and TPPTS ligand (3,3',3-phosphinidynetris[benzenesulfonic acid] trisodium salt, 135 mg, 0.24 mmol) were suspended in 10 mL water and 5 mL acetonitrile. Diisopropylamine (291 mg, 2.85 mmol) was added, and the mixture was heated to 90 C. for 2 hours. The mixture was cooled to room temperature and was diluted with ethyl acetate (150 mL). The organic solution was washed with water (50 mL), dried (MgSO4), filtered through Celite and concentrated to give 499 mg (91%) of the title compound as a light pink powder. MS (ES+) 462.1 (M+H)+. 1H NMR (CD3OD) delta 1.42 (s, 9H), 1.64-1.74 (m, 4H), 1.83-1.96 (m, 1H), 2.17-2.30 (m, 1H), 2.80-2.93 (m, 1H), 3.10 (dt, 1H), 3.24-3.28 (m, 2H), 3.31-3.38 (m, 6H), 4.06 (dd, 1H), 6.79 (d, 1H), 7.39-7.49 (m, 2H), 7.53 (s, 1H), 7.67 (d, 2H), 7.73 (d, 1H), 7.89-7.94 (m, 2H).
  • 4
  • [ 741709-63-7 ]
  • [ 1314319-10-2 ]
  • [ 1334785-12-4 ]
YieldReaction ConditionsOperation in experiment
54% With sodium carbonate;tetrakis(triphenylphosphine) palladium(0); In 1,4-dioxane; water; at 95℃;Inert atmosphere; Reflux; Preparation of 2-[(R)-5-(6-Cyano-pyridin-3-yl)-indan-1-yl]-2,7-diaza-spiro[3.5]nonane-7-carboxylic acid tert-butyl ester (4-1c) In a round-bottomed flask was combined 2-((R)-5-bromo-indan-1-yl)-2,7-diaza-spiro[3.5]nonane-7-carboxylic acid tert-butyl ester (3-1a, 1.50 g, 3.56 mmol), 5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-pyridine-2-carbonitrile (819 mg, 3.56 mmol), Pd(PPh3)4 (210 mg, 0.18 mmol), and K2CO3 (1.12 g, 7.83 mmol). A mixture of 27 mL 1,4-dioxane and 3 mL water (de-oxygenated with a nitrogen stream for 20 minutes) was added and the reaction was heated to 95 C. overnight. The reaction mixture was cooled to room temperature and was diluted with 200 mL ethyl acetate. The organic solution was washed with 50 mL water, dried (MgSO4), filtered through Celite and concentrated to give 2.7 g of a yellow oil. The crude material was purified using ISCO (Teledyne Isco Inc., Lincoln Nebr.) column chromatography, eluting with a 0-100% ethyl acetate in heptanes gradient. The title compound was obtained as a white solid (850 mg, 54%). MS (ES+) 445.1 (M+H)+. 1H NMR (CDCl3) delta 1.43 (s, 9H), 1.64-1.73 (m, 4H), 1.86-2.00 (m, 1H), 2.09-2.24 (m, 1H), 2.87 (dd, 1H), 3.01-3.10 (m, 1H), 3.10-3.19 (m, 4H), 3.27-3.36 (m, 4H), 3.95 (dd, 1H), 7.33-7.41 (m, 2H), 7.42-7.46 (m, 1H), 7.72 (dd, 1H), 7.94 (dd,1H), 8.89 (dd, 1H).
  • 5
  • [ 1314319-10-2 ]
  • [ 36070-75-4 ]
  • [ 1334785-26-0 ]
YieldReaction ConditionsOperation in experiment
59% Preparation of tert-Butyl 2-((R)-5-(5-cyanopyrazin-2-yl)-2,3-dihydro-1H-inden-1-yl)-2,7-diazaspiro[3.5]nonane-7-carboxylate (10-1a) To a solution of tert-butyl 2-[(1R)-5-bromo-2,3-dihydro-1H-inden-1-yl]-2,7-diazaspiro[3.5]nonane-7-carboxylate (3-1a, 700 mg, 1.66 mmol) in anhydrous dioxane (10 mL) was added bis(pinacolato)diboron (473 mg, 1.86 mmol) and potassium acetate (659 mg, 6.71 mmol). The mixture was purged with nitrogen for 15 minutes. Pd(dppf)Cl2 (62 mg, 0.07 mmol) was added and the reaction mixture was purged with nitrogen for an additional 15 minutes. The reaction was heated to 110 C. under nitrogen for 5 hours. TLC indicated the complete consumption of the starting material (3-1a). The reaction was cooled to room temperature and <strong>[36070-75-4]5-chloropyrazine-2-carbonitrile</strong> (278 mg, 1.99 mmol), Pd(dppf)Cl2 (62 mg, 0.07 mmol) and 5.81 mL of 2M aqueous K2CO3 solution (de-oxygenated with a stream of nitrogen for 15 minutes prior to addition) were added. The reaction was purged with nitrogen (3×) and was heated for 20 hours at 110 C. The reaction was cooled and concentrated in vacuo. The residue was partitioned between 50 mL of ethyl acetate and 50 mL of 1N NaOH solution. The organics layer was washed with 50 mL of brine, dried (Na2SO4) and concentrated to give crude product as black semi-solid. The crude product was purified via silca gel chromatography using a Combiflash ISCO purification system (Teledyne Corp., Lincoln, Nebr.) system, eluting with 0-100% EtOAc:heptanes to give the title compound as a brown solid (440 mg, 59%). MS (ES+) 446.3 (M+H)+. 1H NMR (DMSO-d6) delta 1.39 (s, 9H), 1.56-1.64 (m, 4H), 1.81-1.92 (m, 1H), 2.06 (dd, 1H), 2.77-2.87 (m, 1H), 2.92-3.04 (m, 3H), 3.12 (d, 2H), 3.24-3.28 (m, 4H), 3.86 (dd, 1H), 7.41 (d, 1H), 7.55 (d, 1H), 7.62-7.68 (m, 1H), 8.09 (s, 1H), 8.90 (s, 1H).
  • 6
  • [ 1228561-27-0 ]
  • [ 1312131-48-8 ]
  • [ 1314319-10-2 ]
YieldReaction ConditionsOperation in experiment
90% To a solution of <strong>[1228561-27-0](1R)-5-bromoindan-1-amine</strong> (SM-1, 1835 g, 8.66 mol) in anhydrous methanol (24 L) was added tert-butyl 4-(chloromethyl)-4-formylpiperidine-1-carboxylate (SM-3a, 2310 g, 8.83 mol). The mixture was stirred at 50 C. for 16 h, and cooled to rt. Sodium cyanoborohydride (1000 g, 15.9 mol) in THF (15 L) was added via a syringe pump over 2 hours. The mixture was stirred at 60 C. for 24 hours under nitrogen with a vent into a bleach bath. The reaction was cooled to 20 C. and transferred via a cannula into a vessel containing 24 L of 2.5M sodium hydroxide, and 30 L of DCM. The layers were separated and the aqueous layer was extracted with DCM (2×5 L). The aqueous layer was treated to destruct residual sodium cyanoborohydride. The combined organic layers were dried (MgSO4) and concentrated under reduced pressure. The crude material was slurried in MTBE (7 L) by stirring at 40 C. for 1 h and at rt for 1 h. The solid was filtered, and washed with MTBE (2×500 mL) and dried under vacuum oven at 50 C. to give the title product as a white crystals (3657 g, 90%). MS (ES+) 422.3 (M+H)+. 1H NMR (CDCl3) delta 1.44 (s, 9H), 1.67 (dd, 4H), 1.84-1.93 (m, 1H), 2.07-2.16 (m, 1H), 2.72-2.81 (m, 1H), 2.95-3.15 (m, 5H), 3.31 (dd, 4H), 3.85 (br s, 1H), 7.12 (d, 1H), 7.28 (br s, 1H), 7.35 (br s, 1H). [alpha]D20=+39.6 deg (c=1.06 mg/mL, MeOH).
90% To a solution of <strong>[1228561-27-0](R)-5-bromo-2,3-dihydro-1H-inden-1-amine</strong> (1835 g, 8.66 mol) inanhydrous methanol (24 L) was added tert-butyl 4-(chloromethyl)-4-formylpiperidine-1-carboxylate (2310 g, 8.83 mol). The mixture was stirred at 50C for 16 h, and cooled to rt. Sodium cyanoborohydride (1000 g, 15.9 mol) in THF (15 L) was added via a syringe pump over 2 hours. The mixture was stirred at 60C for 24 hours under nitrogen with a vent into a bleach bath. The reaction was cooled to 20C and transferred via a cannulainto a vessel containing 24 L of 2.5M sodium hydroxide, and 30 L of DCM. The layers were separated and the aqueous layer was extracted with DCM (2 x 5 L). The aqueous layer was treated to destruct residual sodium cyanoborohydride. The combined organic layers were dried (Mg504) and concentrated under reduced pressure. The crude material was slurried in MTBE (7 L) by stirring at 40C for 1 h and at rt for 1 h. The solidwas filtered, and washed with MTBE (2 x 500 mL) and dried under vacuum oven at50C to give the title product as a white crystals (3657 g, 90%). MS (ES+) 422.3(M+H). 1H NMR (CDCI3) 1.44 (s, 9H), 1.67 (dd, 4H), 1.84-1.93 (m, 1H), 2.07-2.16 (m,1H), 2.72-2.81 (m,1 H), 2.95-3.15 (m, 5H), 3.31 (dd, 4H), 3.85 (brs, 1H), 7.12 (d, 1H),7.28 (br s, 1 H), 7.35 (br s, 1 H). [a] = +39.6 deg (c = 1.06 mgmL, MeOH).
74% To a solution of <strong>[1228561-27-0](R)-5-bromoindan-1-amine</strong> (1835 g, 8.66 mol) in anhydrous methanol (24 L) was added tert-butyl 4-(chloromethyl)-4-formylpiperidine-1-carboxylate (2310 g, 8.83 mol). The mixture was stirred at 50 C for 16 h, and cooled to rt. Sodium cyanoborohydride (1000 g, 15.9 mol) in THF (15 L) was added via a syringe pump over 2 h. The mixture was stirred at 60 C for 24 h under nitrogen with a vent into a bleach bath. The reaction was cooled to 20 C and transferred via a cannula into a vessel containing 24 L of 2.5M sodium hydroxide, and 30 L of DCM. The layers were separated and the aqueous layer was extracted with DCM (2 x 5L). The aqueous layer was treated to destruct residual sodium cyanoborohydride. The combined organic layers were dried (MgSO4) and concentrated under reduced pressure. The crude material was slurried in methyl tert-butyl ether (7 L) by stirring at 40 C for 1 h and at rt for 1 h. The solid was filtered, and washed with methyl tert-butyl ether (2 x 500 mL) and dried in a vacuum oven at 50 C to give 3 (2699 g, 74%) as white crystals. 1H NMR (500 MHz, Cd3Od): delta 7.42 (s, 1 H), 7.32 (d, J = 10 Hz, 1 H), 7.26 (d, J = 10.0 Hz, 1 H), 4.01-3.97 (m, 1 H), 3.36 (s, 4 H), 3.28-3.30 (m, 2 H), 3.24 (d, J = 10.0 Hz, 2 H), 3.09-3.03 (m, 1 H), 2.86-2.80 (m, 1 H), 2.25-2.18 (m, 1 H), 1.92-1.86 (m, 1 H), 1.72-1.70 (m, 4 H), 1.45 (s, 9 H); 13C NMR (125 MHz, Cd3Od): delta 155.3, 147.3, 142.7, 129.1, 127.9, 126.1, 119.2, 80.0, 71.3, 62.2, 51.5, 35.5, 33.8, 29.9, 29.1, 27.5; HRMS: m/z 421.1480 (calc 421.1485 for C21H29BrN2O2+ H); [alpha]20D= +39.6 deg (c = 1.06 mg/mL, MeOH).
  • 7
  • [ 1314319-10-2 ]
  • [ 1072945-86-8 ]
  • [ 1414782-45-8 ]
YieldReaction ConditionsOperation in experiment
26% With tetrakis(triphenylphosphine) palladium(0); potassium carbonate; In 1,4-dioxane; water; at 95℃; for 18h;Inert atmosphere; To a solution of tert-butyl 2-[(R)-5-bromo-2,3-dihydro-1H-inden-1-yl]-2,7-diazaspiro[3.5]nonane-7-carboxylate 3 (800 mg, 1.9 mmol), <strong>[1072945-86-8](6-(methoxycarbonyl)pyridin-3-yl)boronic acid</strong> 5v (600 mg, 2.28 mmol), Pd(PPh3)4 (112 mg, 0.085 mmol) and K2CO3 (595 mg, 4.18 mmol) in 1,4-dioxane (27 mL) and water (3 mL) (de-gassed with N2 for 20 min) was heated under reflux for 18 h. After cooling to room temperature, the reaction mixture was diluted with ethyl acetate (150 mL), washed with water (50 mL), and the organic layer was dried (MgSO4), filtered and concentrated under reduced pressure to give the crude compound. This material was purified by silica gel chromatography with a gradient of 0-30% methanol in dichloromethane to give 6v (232 mg, 26%) as an orange glass. 1H NMR (400 MHz, CdCl3): delta 8.92 (dd, J = 2.2, 0.7 Hz, 1 H), 8.18 (dd, J = 8.2, 0.8 Hz, 1 H), 7.98 (dd, J = 8.1, 2.2 Hz, 1 H), 7.65 (dd, J = 12.0, 1.5 Hz, 1 H), 7.57-7.51 (m, 1 H), 7.49-7.41 (m, 1 H), 4.02 (s, 3 H), 3.96 (d, J = 2.5 Hz, 1 H), 3.38-3.29 (m, 4 H), 3.21-3.04 (m, 4 H), 2.93-2.81 (m, 1 H), 2.24-2.06 (m, 2 H), 2.00-1.90 (m, 1 H), 1.75-1.65 (m, 4 H), 1.44 (s, 9 H); MS (ESI): m/z 478.1 (M+H)+.
  • 8
  • [ 3435-25-4 ]
  • [ 1314319-10-2 ]
  • [ 1334785-06-6 ]
YieldReaction ConditionsOperation in experiment
86% To a 50 mL flask charged with (R)-tert-butyl 2-(5-bromo-2,3-dihydro-1 H-inden-1-yl)-2,7-diazaspiro[3.5]nonane-7-carboxylate (4.0 g, 9.49 mmol) was addedbis(triphenylphosphine)palladium(l I) chloride (0.17 g, 0.24 mmol), potassium acetate (3.73 g, 37.97 mmol), bis(pinacolato)diboron (2.65 g, 10.44 mmol) followed by degassing via vacuum then backfilling with nitrogen 5 times. De-oxygenated (nitrogen stream for 30 minutes prior to addition) toluene (40 mL) was added to the mixture and the reaction was heated at 100C for 1.5 hours. The reaction was monitored for completion by H PLC. Upon formation of the boronic ester intermediate, the reaction was cooled to 40C and charged with a degassed solution of 4 M sodium hydroxide (11.87 mL, 47.46 mmol) followed by addition of <strong>[3435-25-4]4-chloro-6-methylpyrimidine</strong> (1.53 g, 11.87mmol). The resulting mixture was then heated to 90C for 5 hours under nitrogen. The reaction was cooled to room temperature and charged with water (25 mL). After stirring for 20 minutes, the mixture was filtered to remove black solids. The organic layer was extracted to an aqueous solution containing 1.5 equiv of HCI (40 mL). The organic layer was removed and the resulting solution was treated with (4 g) ISOLUTE Ultra Pure Si-Thiol silica gel for 1.5 hours and filtered. The aqueous solution was adjusted to pH 7.8 with 4N NaOH and extracted with toluene (40 mL). The toluene layer was concentrated to approximately 15 mL under vacuum at 45C and heptane (75 mL) was added slowly and the mixture was stirred at 20C for 1 hour. The product was filtered and dried under vacuum at 45C for 8 hours to afford the title compound as a white solid (3.56 g, 86%).MS(ES-f-)435.5(M-f-H). 1H NMR(CDCl3) 1.46 (s,9 H), 1.70- 1.74(m, 4 H), 1.90-2.01 (m, 1 H), 2.13-2.26 (m, 1 H), 2.59 (s, 3 H), 2.84-2.93 (m, 1 H), 3.04-3.21 (m, 5H), 3.30 - 3.38 (m, 4 H), 3.95 - 4.02 (m, 1 H), 7.40 (d, 1 H), 7.56 (s, 1 H), 7.87 (d, 1 H),7.95 (s, 1 H), 9.12 (s, 1 H).
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