[(4-dicyanomethyl-thiochroman-3-yl)-phenyl-methyl]-carbamic acid tert-butyl ester

Base Information

• Chemical Name: [(4-dicyanomethyl-thiochroman-3-yl)-phenyl-methyl]-carbamic acid tert-butyl ester
• CAS No.: 930113-08-9
• Molecular Formula: C₂₄H₂₅N₃O₂S
• Molecular Weight: 419.547

Synonyms:[(4-dicyanomethyl-thiochroman-3-yl)-phenyl-methyl]-carbamic acid tert-butyl ester

Chemical Property of [(4-dicyanomethyl-thiochroman-3-yl)-phenyl-methyl]-carbamic acid tert-butyl ester

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Technology Process of [(4-dicyanomethyl-thiochroman-3-yl)-phenyl-methyl]-carbamic acid tert-butyl ester

There total 3 articles about [(4-dicyanomethyl-thiochroman-3-yl)-phenyl-methyl]-carbamic acid tert-butyl ester which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 92.0%

[(4-dicyanomethylene-thiochroman-3-yl)-phenyl-methyl]-carbamic acid tert-butyl ester (930112-90-6) → [(4-dicyanomethyl-thiochroman-3-yl)-phenyl-methyl]-carbamic acid tert-butyl ester (930113-08-9)

Guidance literature:

With diethyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate; In ethanol; dichloromethane; at 50 ℃; for 48h;

DOI:10.1021/ja068703p

Reference yield:

(2,3-dihydro-4H-[1]benzothiopyran-4-ylidene)malononitrile (6251-36-1) → [(4-dicyanomethyl-thiochroman-3-yl)-phenyl-methyl]-carbamic acid tert-butyl ester (930113-08-9)

Guidance literature:

Multi-step reaction with 2 steps

1: 99 percent / 1-cyclohexyl-3-((1R,2R)-2-dimethylaminocyclohexyl)thiourea; 4 Angstroem molecular sieves / toluene / 20 °C

2: 92 percent / Hantzsch ester / CH₂Cl₂; ethanol / 48 h / 50 °C

With 1-{(1R,2R)-2-(dimethylamino)cyclohexyl}-3-cyclohexylthiourea; 4 A molecular sieve; diethyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate; In ethanol; dichloromethane; toluene; 1: Mannich reaction;

DOI:10.1021/ja068703p

Reference yield:

tert-butyl benzylidenecarbamate (177896-09-2) → [(4-dicyanomethyl-thiochroman-3-yl)-phenyl-methyl]-carbamic acid tert-butyl ester (930113-08-9)

Guidance literature:

Multi-step reaction with 2 steps

1: 99 percent / 1-cyclohexyl-3-((1R,2R)-2-dimethylaminocyclohexyl)thiourea; 4 Angstroem molecular sieves / toluene / 20 °C

2: 92 percent / Hantzsch ester / CH₂Cl₂; ethanol / 48 h / 50 °C

With 1-{(1R,2R)-2-(dimethylamino)cyclohexyl}-3-cyclohexylthiourea; 4 A molecular sieve; diethyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate; In ethanol; dichloromethane; toluene; 1: Mannich reaction;

DOI:10.1021/ja068703p

upstream raw materials:

[(4-dicyanomethylene-thiochroman-3-yl)-phenyl-methyl]-carbamic acid tert-butyl ester

(2,3-dihydro-4H-[1]benzothiopyran-4-ylidene)malononitrile

tert-butyl benzylidenecarbamate

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