(1R,4aS,5S,7aR)-1-Bromomethyl-5-(tert-butyl-diphenyl-silanyloxymethyl)-1,5-dimethyl-hexahydro-cyclopenta[c]pyran-6-one

Base Information

Chemical Name:(1R,4aS,5S,7aR)-1-Bromomethyl-5-(tert-butyl-diphenyl-silanyloxymethyl)-1,5-dimethyl-hexahydro-cyclopenta[c]pyran-6-one
CAS No.:153142-75-7
Molecular Formula:C₂₈H₃₇BrO₃Si
Molecular Weight:529.589
Hs Code.:

Synonyms:(1R,4aS,5S,7aR)-1-Bromomethyl-5-(tert-butyl-diphenyl-silanyloxymethyl)-1,5-dimethyl-hexahydro-cyclopenta[c]pyran-6-one

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Chemical Property of (1R,4aS,5S,7aR)-1-Bromomethyl-5-(tert-butyl-diphenyl-silanyloxymethyl)-1,5-dimethyl-hexahydro-cyclopenta[c]pyran-6-one

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Technology Process of (1R,4aS,5S,7aR)-1-Bromomethyl-5-(tert-butyl-diphenyl-silanyloxymethyl)-1,5-dimethyl-hexahydro-cyclopenta[c]pyran-6-one

There total 8 articles about (1R,4aS,5S,7aR)-1-Bromomethyl-5-(tert-butyl-diphenyl-silanyloxymethyl)-1,5-dimethyl-hexahydro-cyclopenta[c]pyran-6-one 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: 88.0%

: 153142-74-6
(2S,3S,4R)-2-(tert-Butyl-diphenyl-silanyloxymethyl)-4-isopropenyl-3-[2-(2-methoxy-ethoxymethoxy)-ethyl]-2-methyl-cyclopentanone

: 153142-75-7
(1R,4aS,5S,7aR)-1-Bromomethyl-5-(tert-butyl-diphenyl-silanyloxymethyl)-1,5-dimethyl-hexahydro-cyclopenta[c]pyran-6-one

Guidance literature:: With N-Bromosuccinimide; In tetrahydrofuran; at 0 - 22 ℃;
DOI:10.1021/ja00077a097

Reference yield:

: 98049-46-8
(1'R,2'R)-2-(2'-hydroxymethyl-2'-methyl-3'-methylenecyclopentyl)ethanoic acid

: 153142-75-7
(1R,4aS,5S,7aR)-1-Bromomethyl-5-(tert-butyl-diphenyl-silanyloxymethyl)-1,5-dimethyl-hexahydro-cyclopenta[c]pyran-6-one

Guidance literature:: Multi-step reaction with 7 steps

1: Et₃N, AgNO₃ / dimethylformamide

2: LiAlH₄ / CH₂Cl₂ / 0 °C

3: i-Pr₂NEt / CH₂Cl₂ / 0 °C

4: 1.) O₃, 2.) Ph₃P / 1.) CH₂Cl₂, -78 deg C, 2.) CH₂Cl₂

5: 1.) NaN(TMS)2, TMSCl, 2.) Pd(OAc)2 / 1.) THF, -15 deg C, 2.) MeCN, 22 deg C

6: 92 percent / n-BuLi, CuBr*DMS / tetrahydrofuran / -78 °C

7: 88 percent / NBS / tetrahydrofuran / 0 - 22 °C

With palladium diacetate; N-Bromosuccinimide; lithium aluminium tetrahydride; n-butyllithium; chloro-trimethyl-silane; copper(I) bromide dimethylsulfide complex; sodium hexamethyldisilazane; ozone; silver nitrate; triethylamine; N-ethyl-N,N-diisopropylamine; triphenylphosphine; In tetrahydrofuran; dichloromethane; N,N-dimethyl-formamide;
DOI:10.1021/ja00077a097

Reference yield:

: 122552-73-2
C₄₂H₅₂O₃Si₂

: 153142-75-7
(1R,4aS,5S,7aR)-1-Bromomethyl-5-(tert-butyl-diphenyl-silanyloxymethyl)-1,5-dimethyl-hexahydro-cyclopenta[c]pyran-6-one

Guidance literature:: Multi-step reaction with 6 steps

1: LiAlH₄ / CH₂Cl₂ / 0 °C

2: i-Pr₂NEt / CH₂Cl₂ / 0 °C

3: 1.) O₃, 2.) Ph₃P / 1.) CH₂Cl₂, -78 deg C, 2.) CH₂Cl₂

4: 1.) NaN(TMS)2, TMSCl, 2.) Pd(OAc)2 / 1.) THF, -15 deg C, 2.) MeCN, 22 deg C

5: 92 percent / n-BuLi, CuBr*DMS / tetrahydrofuran / -78 °C

6: 88 percent / NBS / tetrahydrofuran / 0 - 22 °C

With palladium diacetate; N-Bromosuccinimide; lithium aluminium tetrahydride; n-butyllithium; chloro-trimethyl-silane; copper(I) bromide dimethylsulfide complex; sodium hexamethyldisilazane; ozone; N-ethyl-N,N-diisopropylamine; triphenylphosphine; In tetrahydrofuran; dichloromethane;
DOI:10.1021/ja00077a097