Journal of the Chemical Society. Perkin transactions I p. 842 - 848 (1981)
Update date:2022-09-26
Topics:
Glover, Stephen A.
Golding, Stephen L.
Goosen, Andre
McCleland, Cedric W.
Biphenyl-2-carboxyl radicals generated by homolysis of acyl hypoiodites cyclise intramoleculary giving mainly δ-lactones through Ar2-6 cyclisation. 2'-Alkoxybiphenyl-2-carboxyl radicals do not give the expected Ar1-5 cyclisation product but undergo a homolytic ipso-substitution of the 2'-substituent.The phenanthrene-4-carboxyl radical gives 5H-phenanthro<4,5-bcd>pyran-5-one.Consideration of the molecular orbitals involved suggests that the biphenyl-2-carboxyl radicals are in the ?-ground state and have a higher energy, and, therefore, a less thermally accessible Σ-state than the corresponding amido-radicals.It is suggested that acyloxyl radicals which readily decarboxylate have either a Σ-ground state or a thermally accessible excited Σ-state.
View MoreShanghai Harvest Chemical Ind. Co., Ltd.
Contact:021-51385350
Address:ROOM 806-807, AI LI CHEN BUILDING, No.333 JINGXIANG ROAD, PUDONG DISTRICT, 201206, SHANGHAI
Shandong Wanda Organosilicon New Material Co., Ltd
Contact:+86-21-54177116;54302881
Address:R1318 Greenland No. 3 Lane 58 Xinjian East Rd., Minhang
Hangzhou Gangjin Chemical Co.,Ltd.(expird)
Contact:+86-571-85109780
Address:707 Zhejiang Minhang Bldg., No.290 Zhongshan North Road, Hangzhou 310003, China
KA-SHING Business Trade Macau Co., Ltd.
Contact:00853-28430045
Address:23rd Floor, Block 3 La Cite, Areia Preta, Macao
Tianjin Dongchang Fine Chemical Industry Co., Ltd.
Contact:+86-22-29894595
Address:Economic Developing Zone, Ji County, Tianjin, China
Doi:10.1271/bbb.120925
(2013)Doi:10.1016/0040-4039(81)80004-4
(1981)Doi:10.1016/S0040-4020(01)97718-X
(1981)Doi:10.1002/em.10060
(2002)Doi:10.1039/c39810000053
(1981)Doi:10.1016/j.tetlet.2004.07.145
(2004)