Thallium trinitrate mediated ring contraction of monocyclic ketones: Stereochemical aspects
摘要:
The reaction of 3- and 4-alkylcyclohexanones with thallium trinitrate (TTN) leads to the alkylcyclopentanecarboxylic acids in good yields and with high degree of stereoselectivity. The ring contraction of 2-methylcyclohexanone gives poor yields and 2,6-dimethylcyclohexanone does not undergo contraction. The observed diastereoselectivities of the reactions agree with the mechanism proposed by McKillop et al. (C) 1997 Elsevier Science Ltd.
Gream,G.E. et al., Australian Journal of Chemistry, 1978, vol. 31, p. 835 - 862
作者:Gream,G.E. et al.
DOI:——
日期:——
Cooper, Catherine N.; Jenner, Peter J.; Perry, Nigel B., Journal of the Chemical Society. Perkin transactions II, 1982, p. 605 - 612
作者:Cooper, Catherine N.、Jenner, Peter J.、Perry, Nigel B.、Russel-King, Jonquil、Storesund, Hans J.、Whiting, Mark C.
DOI:——
日期:——
Thallium trinitrate mediated ring contraction of monocyclic ketones: Stereochemical aspects
作者:Helena M.C. Ferraz、Luiz F. Silva
DOI:10.1016/s0040-4039(97)00246-3
日期:1997.3
The reaction of 3- and 4-alkylcyclohexanones with thallium trinitrate (TTN) leads to the alkylcyclopentanecarboxylic acids in good yields and with high degree of stereoselectivity. The ring contraction of 2-methylcyclohexanone gives poor yields and 2,6-dimethylcyclohexanone does not undergo contraction. The observed diastereoselectivities of the reactions agree with the mechanism proposed by McKillop et al. (C) 1997 Elsevier Science Ltd.