Cleavage of unsaturated .alpha.-ketols to .omega.-oxo-.alpha.,.beta.-unsaturated acids
摘要:
Sodium periodate is a better reagent than sodium bismuthate, manganese dioxide, or lead tetraacetate for the cleavage of unsaturated alpha-ketols and affords omega-oxo-alpha,beta-unsaturated acids in good yield. The combination of this cleavage reaction and a rhodium(I)-mediated decarbonylation of omega-oxo-alpha,beta-unsaturated esters derived from polycyclic systems provided an enantioselective synthesis of cyclic systems bearing contiguous quaternary centers where one of the centers possessed gem-dimethyl groups.
Floresca Rey, Kurihara Masaaki, Watt David S., Demir Ayhan, J. Org. Chem., 58 (1992) N 8, S 2196-2200
作者:Floresca Rey, Kurihara Masaaki, Watt David S., Demir Ayhan
DOI:——
日期:——
DUNLAP, N. K.;SABOL, M. R.;WATT, D. S., TETRAHEDRON LETT., 1984, 25, N 51, 5839-5842
作者:DUNLAP, N. K.、SABOL, M. R.、WATT, D. S.
DOI:——
日期:——
Cleavage of unsaturated .alpha.-ketols to .omega.-oxo-.alpha.,.beta.-unsaturated acids
作者:Rey Floresca、Masaaki Kurihara、David S. Watt、Ayhan Demir
DOI:10.1021/jo00060a040
日期:1993.4
Sodium periodate is a better reagent than sodium bismuthate, manganese dioxide, or lead tetraacetate for the cleavage of unsaturated alpha-ketols and affords omega-oxo-alpha,beta-unsaturated acids in good yield. The combination of this cleavage reaction and a rhodium(I)-mediated decarbonylation of omega-oxo-alpha,beta-unsaturated esters derived from polycyclic systems provided an enantioselective synthesis of cyclic systems bearing contiguous quaternary centers where one of the centers possessed gem-dimethyl groups.
Oxidation of enones to α′-acetoxyenones using manganese triacetate
作者:Norma K. Dunlap、Mark R. Sabol、David S. Watt
DOI:10.1016/s0040-4039(01)81699-3
日期:1984.1
The oxidation of α,β-unsaturated ketones with manganese (III) triacetate in benzene furnishes α'-acetoxyenones in good yields.