Tetrahedron p. 8107 - 8118 (1993)
Update date:2022-09-26
Topics:
Stern, Alfred G.
Ilao, Martin C.
Nickon, Alex
Homobrexan-2-one was synthesized labeled in the α-position with 13C and also with an axial or equatorial D.Their p-tosylhydrazone Li salts were thermolyzed and photolyzed (Bamford-Stevens reaction) to generate putative singlet carbenes, which undergo competitive 1,3-insertion to a tetracycle and 1,2-H (or D) shift to an alkene.After correction for isotope effects, the Hax/Heq shift ratios were ca. 1.7 and ca. 1.2 for the thermal and photic processes, respectively.These ratios are free of chair-boat and epimerization ambiguities.
View MoreWuHan rongfashun BioChemical co., LTD
Contact:02788866139
Address:No.95 LuoYu Road,Wuhan
SHIJIAZHUANG CHENSHI IMPORT AND EXPORT CO.,LTD
Contact:+86-311-89871056
Address:RM2017 BUILDING CTIANSHAN GALAXY PLAZA,NO168 CHANGJIANG ROAD,GAOXIN DISTRICT,SHIJIAZHUANG CITY, HEBEI,CHINA
Shandong LuZhou Amino Acid Co., Ltd
Contact:86-539-2218025
Address:yishui economic and technical development zone zhenxing south road
Shanghai Demand Chemical Co., ltd，China
Contact:86-021-55237578/55239122
Address:Room 3H, No.578, Yingkou Road, Yangpu District, Shanghai, China
Contact:+86-20-32051076
Address:1105,Building A, International Business Incubator,Science City
Doi:10.1021/jo00825a004
(1971)Doi:10.1016/S0040-4020(01)90876-2
(1971)Doi:10.1021/jo0013711
(2001)Doi:10.1021/jm00289a013
(1971)Doi:10.1039/a709075g
(1998)Doi:10.1007/s00044-018-2185-x
(2018)
