An effective and selective conjugate propargylation reaction of stannylallenes to .alpha.,.beta.-unsaturated carbonyl compounds and .alpha.-nitro olefins
An effective and selective conjugate propargylation reaction of stannylallenes to .alpha.,.beta.-unsaturated carbonyl compounds and .alpha.-nitro olefins
A New and Mild Heterogeneous Catalytic Decomposition of α-Diazo Carbonyl Compounds Using Montmorillonite or Zeolite
作者:Sengodagounder Muthusamy、Srinivasarao Arulananda Babu、Chidambaram Gunanathan、Raksh Vir Jasra
DOI:10.1055/s-2002-20452
日期:——
A very mild method of decomposition of various α-diazo carbonyl compounds 1 in the presence of environmentally attractive solid acids such as montmorillonite K-10 or zeolite H-Y in a heterogeneous manner to furnish α-hydroxy/alkoxy ketones in very good yield is reported. Interestingly, novel bicycloalkane-1,3-diones and 3-furanones were obtained as unusual products in the case of aliphatic/alicyclic α-diazo carbonyl compounds.
Amberlyst-15 mediated decomposition of α-diazo carbonyl compounds
作者:Sengodagounder Muthusamy、Srinivasarao Arulananda Babu、Chidambaram Gunanathan、Raksh Vir Jasra
DOI:10.1016/s0040-4039(01)00936-4
日期:2001.7
An efficient heterogeneous catalytic method for the synthesis of alpha -hydroxy ketones from alpha -diazo carbonyl compounds 1, 3 and 6 in the presence of Amberlyst-15. a macro reticular ion exchange resin, is reported. The desired products were obtained at room temperature or by ultrasonication in good yield. Interestingly, novel fused 3-furanones and bicycloalkane-1,3-diones were obtained as unusual products in the case of alicyclic alpha -diazo carbonyl compounds. (C) 2001 Elsevier Science Ltd. All rights reserved.
HARUTA, JUN-ICHI;NISHI, KOICHI;MATSUDA, SATOSHI;AKAI, SHUJI;TAMURA, YASUM+, J. ORG. CHEM., 55,(1990) N6, C. 4853-4859
An effective and selective conjugate propargylation reaction of stannylallenes to .alpha.,.beta.-unsaturated carbonyl compounds and .alpha.-nitro olefins
作者:Junichi Haruta、Koichi Nishi、Satoshi Matsuda、Shuji Akai、Yasumitsu Tamura、Yasuyuki Kita