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                            The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
 
                
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| CAS No. : | 180092-32-4 | 
| Formula : | C10H12O | 
| M.W : | 148.20 | 
| SMILES Code : | OCC1=CC=CC=C1C(C)=C | 
| MDL No. : | MFCD30161178 | 
| InChI Key : | JTKILVMMBUMPQG-UHFFFAOYSA-N | 
| Pubchem ID : | 22172409 | 
| GHS Pictogram: |   | 
| Signal Word: | Warning | 
| Hazard Statements: | H315-H319 | 
| Precautionary Statements: | P264-P280-P302+P352-P305+P351+P338-P332+P313-P337+P313-P362 | 
* 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.

| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 95% | With thionyl chloride; In dichloromethane; at 0 - 5℃; for 1.0h; | Step 4: 1-(chloromethyl)-2-(prop-1-en-2-yl)benzene To a solution of <strong>[180092-32-4](2-(prop-1-en-2-yl)phenyl)methanol</strong> (obtained from step 3) (7.0 g, 47.2 mmol) in DCM (70 mL) was added thionyl chloride (6.2 g, 52.3 mmol) dropwise at 0˜5 C. The resulted mixture was stirred at the same temperature for 1 h and then diluted with saturated NaHCO3 aqueous solution (20 mL), the aqueous layer was extracted with DCM (50 mL*3). The combined organic layer was washed with brine (100 mL), dried over sodium sulfate, filtered and concentrated to afford 1-(chloromethyl)-2-(prop-1-en-2-yl)benzene (7.5 g, yield: 95%) as light yellow oil. | 
| With pyridine; thionyl chloride; In dichloromethane; at 0 - 20℃; for 4.0h; | General procedure: To a stirred solution of 3a (0.55 g,2.6 mmol) in CH2Cl2 (8 mL) containing pyridine (0.21 g, 2.6 mmol) at 0 C was added SOCl2 (0.31 g, 2.6mmol) dropwise and temperature was raised to rt. After 4 h, the mixture was diluted by adding CH2Cl2(20 mL) and treated with H2O (20 mL). The layers were separated and the aqueous layer was extractedwith CH2Cl2 (2 × 15 mL). The combined organic layers were washed with brine (15 mL), dried (Na2SO4)and concentrated by evaporation. The crude product 4a (0.46 g) was used in the next reaction withoutpurification. Thus, to a stirred suspension of NaH (60% in mineral oil; 88 mg, 2.2 mmol) in DMF (3 mL)at 0 C was added t-BuSH (0.20 g, 2.2 mmol) dropwise. After evolution of H2 gas had ceased, a DMF (2mL) solution of the above 4a was added. After 5 min, saturated aqueous NH4Cl (20 mL) was added andthe mixture was extracted with AcOEt (3 × 15 mL). The combined extracts were washed with brine (20mL), dried (Na2SO4), and concentrated by evaporation. The residue was purified by columnchromatography on SiO2 (CH2Cl2/hexane 1:3) to give 5a (0.47 g, 64%); | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 66% | Formaldehyde generated by depolymerization of 30.00 g(1.00 mol) of paraformaldehyde (preliminarily driedover P2O5) at 170-180C was passed in a stream of nitrogen through a solution of Grignard reagent prepared from 17.00 g (0.09 mol) of compound 6b in150 mL of anhydrous diethyl ether and 2.80 g(0.12 mol) of magnesium, maintaining the temperatureat 40C. The mixture was treated with 80 g of finely crushed ice, the yellow precipitate was dissolved in 80 mL of a 2 N solution of sodium sulfate, and the solution was steam-distilled. The distillate was extracted with diethyl ether (3 × 50 mL), and the combined extracts were dried over Na2SO4 and evaporated. Yield 8.00 g (66%), purity 98% (GLC), bp 103-104C(5 mm), d420 = 1.0193, nD20 = 1.5470; MRD 46.11, calcd.45.84. IR spectrum, ν, cm-1: 3360, 1050 (OH), 3080,1658, 910 (C=CH2), 3040, 730 (1,2-C6H4). 1H NMRspectrum, δ, ppm: 2.04 (3H, CH3), 2.14 s (1H, OH),4.63 s (2H, CH2OH), 4.91 q and 5.23 q (2H, =CH2, J =1.4 Hz), 7.11-7.59 m (4H, Harom). Found, %: C 80.79;H 7.94. C10H12O. Calculated, %: C 81.04; H 8.16. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 71% | With sodium; In propan-1-ol; at 100℃; | (2-Isopropylphenyl)methanol (1) was synthesized by reduction of 14.8 g (0.10 mol) of unsaturated alcohol 7 with 13.8 g (0.60 mol) of finely cut metallic sodium in 130 mL (1.80 mol) of propan-1-ol on stirring at 100C, followed by conventional treatment. Yield 10.00 g (71%), purity 98% (GLC), bp 93-94C (5 mm), d420 = 0.9305, nD20 = 1.5202; MRD = 46.59,calcd. 46.31. IR spectrum, ν, cm-1: 3340, 1040 (OH),3040, 1380, 1365 [CH(CH3)2]. 1H NMR spectrum, δ,ppm: 1.18 d (6H, CH3, J = 7 Hz), 2.80 m [1H,CH(CH3)2], 3.26 q (CH2), 4.43 (1H, OH), 7.07 m (4H,Harom). Found, %: C 79.80; H 9.11. C10H14O. Calculated,%: C 79.96; H 9.39. | 
 [ 133745-75-2 ]
                                                    
                                                    [ 133745-75-2 ]
 [ 180092-32-4 ]
                                                    
                                                    [ 180092-32-4 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 88% | With sodium tetrahydroborate; In methanol; at 0℃; for 0.08333330000000001h; | General procedure: To a stirring solution of 2a (0.66 g, 3.2 mmol) in MeOH (6 mL)at 0 C was added NaBH4 (0.12 g, 3.2 mmol) in several portions. After 5 min, 1% aqueous HCl (v/v) (20mL) was added and the organic solvent was removed by evaporation. The mixture was extracted withAcOEt (3 × 15 mL), and the combined extracts were washed with brine (20 mL), dried (Na2SO4) andconcentrated by evaporation. The residue was purified by column chromatography on SiO2 (Et2O/hexane1:1) to give 3a (0.55 g, 82%); | 
| 74% | With methanol; sodium tetrahydroborate; at 0 - 5℃; for 2.0h; | Step 3: (2-(prop-1-en-2-yl)phenyl)methanol To a solution of 2-(prop-1-en-2-yl)benzaldehyde (obtained from step 2) (11.8 g, 80 mmol) in methanol (95 mL) was added NaBH4 (3.67 g, 97 mmol) in small portions at 0˜5 C. The resulted mixture was stirred at the same temperature for 2 h, and then the reaction was quenched by addition of hydrochloric acid (2 M), and the mixture was extracted with ethyl acetate (100 mL*3). The combined organic phase was washed with brine (100 mL), dried over sodium sulfate, filtered and concentrated. The residue was purified by column chromatography on silica gel (petroleum ether:ethyl acetate=15:1) to afford (2-(prop-1-en-2-yl)phenyl) methanol (8.8 g, yield: 74%) as light yellow oil. 1H NMR (CDCl3, 400 Hz): δ 7.47-7.49 (m, 1H), 7.28-7.33 (m, 2H), 7.19-7.21 (m, 1H), 5.27 (m, 1H), 4.93 (m, 1H), 4.72 (s, 2H), 2.10 (s, 3H). |