作者:Thomas L. Gilchrist、Charles W. Rees、David Tuddenham
DOI:10.1039/c39800000689
日期:——
3-Methoxy-3a-methyl-3aH-indene (4) has been synthesised and is isolated as an unstable, readily oxidised oil, which undergoes [8 + 2]cycloaddition with 4-phenyltriazoline-3,5-dione and with dimethyl acetylene-dicarboxylate.
Platinum and Ruthenium Chloride-Catalyzed Cycloisomerization of 1-Alkyl-2-ethynylbenzenes: Interception of π-Activated Alkynes with a Benzylic C−H Bond
作者:Mamoru Tobisu、Hiromi Nakai、Naoto Chatani
DOI:10.1021/jo901045g
日期:2009.8.7
Air-stable and commercially available alkynophilic metal salts, such as PtCl2, PtCl4, and [RuCl2(CO)(3)](2), catalyze the cycloisomerization of 1-alkyl-2-ethynylbenzenes to produce Substituted indenes even at all ambient temperature. Electrophilically activated alkynes can be intercepted by simple benzylic C-H bonds at primary, secondary, and tertiary carbon centers. Mechanistic studies, such as labeling studies and kinetic isotope and substituent effects, indicate that the cycloisomerization proceeds through the formation of a vinylidene intermediate and turnover-limiting 1,5-shift of benzylic hydrogen.
McCague, Raymond; Moody, Christopher J.; Rees, Charles W., Journal of the Chemical Society. Perkin transactions I, 1983, # 10, p. 2399 - 2407
作者:McCague, Raymond、Moody, Christopher J.、Rees, Charles W.
DOI:——
日期:——
GILCHRIST T. L.; REES C. W.; TUDDENHAM D., J. CHEM. SOC. CHEM. COMMUN., 1980, NO 15, 689-690
作者:GILCHRIST T. L.、 REES C. W.、 TUDDENHAM D.
DOI:——
日期:——
GILCHRIST, T. L.;REES, C. W.;TUDDENHAM, D., J. CHEM. SOC. PERKIN TRANS., 1981, N 12, 3214-3220