Oxidative cleavage of the C–C bond of 3,6-dialkylcyclohexane-1,2-diones by cell suspension cultures of Marchantia polymorpha
摘要:
Biotransformation of 3,6-dialkylcyclohexane-1,2-diones by cell suspension cultures of Marchantia polymorpha involves regioselective oxidative cleavage of the C-C bond to give the corresponding oxocarboxylic acids shortened by one carbon unit. In the case of cyclohexane-1,2-dione, adipic acid was obtained. (C) 2002 Elsevier Science Ltd. All rights, reserved.
A New Synthesis of 3-Alkyl-2-hydroxy-2-cyclohexen-1-ones
作者:Kikumasa Sato、Seiichi Inoue、Masao Ohashi
DOI:10.1246/bcsj.47.2519
日期:1974.10
one (Ia), a flavor component of coffee aroma, is described. The seleniumdioxideoxidation of ethyl 1-methyl-2-oxocyclohexanecarboxylate (IIa) gave α-diketone (IIIa), which was then hydrolyzed and decarboxylated to afford Ia. The treatment of IIa with cupric chloride in 50% aceticacid also yielded Ia. The dimethyl sulfoxide oxidation of ethyl 3-bromo-1-methyl-2-oxocyclohexanecarboxylate (IV) afforded
REGIOSELECTIVE MONOALKYLATION OF 3-METHYL-1,2-CYCLOHEXANEDIONE
作者:Masanori Utaka、Makoto Hojo、Akira Takeda
DOI:10.1246/cl.1984.445
日期:1984.3.5
Monoalkylation of 3-methyl-1,2-cyclohexanedione was achieved regioselectively to give 6-alkyl-3-methyl-1,2-cyclohexanedione as a major product without the formation of O-alkylated or polyalkylated products.
Conjugate addition of lithium diorganocuprate reagents to the enol tosylate of a 1,2-diketone
作者:Jeffrey A. Charonnat、Anna L. Mitchell、Bartholomew P. Keogh
DOI:10.1016/s0040-4039(00)94542-8
日期:1990.1
The conjugateaddition of lithium diorganocuprate reagents to the enol tosylate of 1,2-cyclohexanedione has been investigated. The intermediate enolates eliminate para-toluenesulfmate ion to generate the alkylated 1,2-dicarbonyl system.