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 MoreContact:+86 18616952870
Address:Area
Goldwills Pharmaceuticals Co., Ltd.
Contact:0916-2237889 13991621155
Address:North Suburb of Hanzhong city, Shaanxi Province
Dalian Synco Chemical Co., Ltd.
Contact:+86-411-83635150
Address:Rm 1004, 24, Tangshan Street, Dalian
Wuxi Forest Biological Co.,Ltd
Contact:+86-510-81602300
Address:Room 317,Building D, No.159 middle Chengjiang Road,Jiangyin Wuxi city.
website:https://www.sinoshiny.com/products
Contact:+86-20-62802632;62802633
Address:Room 330 GIGCAS Building,No.511 Kehua Street,Tianhe District
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)
