Canadian Journal of Chemistry p. 1883 - 1893 (1994)
Update date:2022-08-03
Topics:
Liu
Li
Browne
The stereofacially differentiated enone aldehyde 11 was chosen to study the effects of steric and electronic influence on the Diels-Alder reaction. Under Lewis acid catalysis, 11 adds to dienes at low temperatures at a reasonable rate. Yields of desired chiral adducts are good to high with zinc chloride and boron trifluoride etherate catalysis. In all cases only products of addition to the Re face of general type 27 were observed. The regiochemistry of the adducts is exclusively that predicted by the ortho and para rules. The stereochemistry shows a very high selectivity in favour of aldehyde-endo transition state products. Unusual by-products were also obtained in some examples and mechanisms of these unexpected reactions are discussed.
View Morexi'an taima biological engineering co., ltd.
Contact:+8615619038117
Address:6 No,keji road xi'an city of china
Suzhou BEC Fine Chemicals Co., Ltd.
website:http://www.bek.com.cn
Contact:0512-68095917 18913193865
Address:6, Jin Shan Road, Suzhou New District, 215011 China Suzhou Nations Pharmaceutical Innovation Center Inside
Contact:0571-86821378 ,86820258,56836287,56830923,
Address:Block D ,20F, Tianyuan Building,No.508, Wensan RD, 310013,Hangzhou Zhejiang China
Contact:86-510-82853889
Address:Rm.3732, No.18-2,Yonghe Rd.,Wuxi,Jiangsu,214023,China
Hubei Lansun Biochemical Pharmaceutical Co., Ltd
Contact:714-6395977
Address:No. 81 Pengcheng Avenue, economic and technological development zone, Huangshi City, Hubei Province,China
Doi:10.1007/s10593-012-1033-z
(2012)Doi:10.1002/anie.201201116
(2012)Doi:10.1021/ol301846q
(2012)Doi:10.1021/jo00033a025
(1992)Doi:10.1039/c2gc35476d
(2012)Doi:10.1002/anie.201202525
(2012)