Reduction par les sels chromeux de bromures benzyliques ortho-o-acyles avec transposition du groupement acyle
作者:B. Ledoussal、A. Gorgues、A. Le Coq
DOI:10.1016/s0040-4020(01)87790-5
日期:——
σ-bonded organochromium (III) complexes resulting from the reduction of-O-acyl benzylicbromides with CrCl2., undergo an 1,5-transposition of the esteracyl functional group which allows, through selected experimental conditions either a selective access to the unmasked -hydroxybenl ketones or a new preparation of the 2-substituted benzo¦b¦furans . The scope and limitations of the method are presented
RAO, U.;BALASUBRAMANIAN, K. K., TETRAHEDRON LETT., 1983, 24, N 45, 5023-5024
作者:RAO, U.、BALASUBRAMANIAN, K. K.
DOI:——
日期:——
LEDOUSSAL, B.;GORGUES, A.;LE, COQ A., TETRAHEDRON, 43,(1987) N 24, 5841-5852
作者:LEDOUSSAL, B.、GORGUES, A.、LE, COQ A.
DOI:——
日期:——
Claisen rearrangement of aryl propargyl ethers in poly(ethylene glycol)- a remarkable substituent and solvent effect
作者:Usha Roa、K.K. Balasubramanian
DOI:10.1016/s0040-4039(01)99839-9
日期:1983.1
The Claisen rearrangement of aryl propargyl ethers in poly(ethylene glycol) - 200 at 200°C affords products in good yields. Aryl propargyl ethers containing electron donating groups yield (2H)-benzopyrans and those containing electron withdrawing groups yield 2-methylbenzofurans.