中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 4a-methyloctahydronaphthalen-2(1H)-one | 57458-01-2 | C11H18O | 166.263 |
2-甲基-2-(3-氧代-丁基)-环己酮 | 2-methyl-2-(3'-oxobutyl)cyclohexan-1-one | 4071-58-3 | C11H18O2 | 182.263 |
—— | 8aα-hydroxy-4aα-methyloctahydronaphthalen-2(1H)-one | 4707-07-7 | C11H18O2 | 182.263 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (3α,4aα,8aβ)-3-acetyl-3,4a-dimethyloctahydronaphthalen-2(1H)-one | 77748-72-2 | C14H22O2 | 222.327 |
—— | (+/-)-3t-bromo-4a-methyl-(4ar,8at)-octahydro-naphthalen-2-one | 2530-21-4 | C11H17BrO | 245.159 |
—— | 9-methyl-trans-decahydronaphthalene | 2547-27-5 | C11H20 | 152.28 |
The relative reactivities of a number of cis/trans pairs of bicyclic ketones in the 1- and 2-decalone series (2-decalone; 10-methyl-2-decalone; 9-methyl-1-decalone; and 3,10-dimethyl-2-decalone) have been studied for the nucleophilic addition of hydroxylamine in acidic medium. The results obtained as well as the rate constants for neutral or acid catalysed addition always reveal a slight preference for the trans-isomer (× 2.4). This result agrees with the proposal that preferential equatorial attack of a nucleophile is caused by conformational factors related to a steroid [Formula: see text] non-steroid conformation equilibrium in the cis-isomers.
[Journal Translation]