LEE, THOMAS V.;RODEN, FRANCES S.;YEOH, HELENA T. -L., TETRAHEDRON LETT., 31,(1990) N4, C. 2063-2066
作者:LEE, THOMAS V.、RODEN, FRANCES S.、YEOH, HELENA T. -L.
DOI:——
日期:——
Selectivity of bifunctional annulating reagents: Additional rules for ring closure
作者:Thomas V. Lee、Frances S. Roden、Helena T-L. Yeoh
DOI:10.1016/s0040-4039(00)88916-9
日期:1990.1
From a consideration of the products of cyclisation of allyisilanes it is concluded that stereoelectronic effects play a dominant rô1e and that descriptors, similar to those for predicting intramolecular aldol cyclisations, could be used for intramolecular cyclisations of allylic species.
The cerium (III) mediated reaction of trimethylsilylmethyl magnesium chloride with esters and lactones: The efficient synthesis of some functionalised allylsilanes of use in annulation reactions
作者:Thomas V. Lee、Julia A. Channon、Carmel Cregg、John R. Porter、Frances S. Roden、Helena T-L. Yeoh
DOI:10.1016/s0040-4020(01)89114-6
日期:1989.1
(111) chloride alters the chemoselectivity of the reaction of trimethylsilylmethyl magnesiumchloride with ester-acetals and also greatly improves the efficiency of reaction with lactones. In addition it gives improved preparations of the useful intermediates (7), (13), (18),(20) and (22) and gives direct access to the valuable functionalised allylsilanes (1) to (3) of use in annulation reactions.