Synthèse de N-alkyl tétrahydro-2,3,6,7 azépines et de N-alkyl hexahydro-1,2,3,4,7,8 azocines à partir d'ω-monoalkylaminoallyltriméthylsilanes par processus d'aminométhylation-désilylation intramoléculaire
N-hydroxypyridine-2-thione carbamates. IV. A comparison of 5-exo cyclizations of an aminyl radical and an aminium cation radical
作者:Martin Newcomb、Thomas M. Deeb、Donald J. Marquardt
DOI:10.1016/s0040-4020(01)82012-3
日期:1990.1
N-butyl-4-pentenaminyl radical and the N-butyl-4-pentenaminium cation radical were studied. The radicals were produced in chain reactions from the same N-hydroxypyridine- 2-thione carbamate precursor. Rate constants for cyclization of the aminyl radical and ring opening of the product thus formed at 50 °C were determined. Cyclizations of the aminium cation radical, formed by protonation of the aminyl radical, were
N-Hydroxypyridine-2-thione carbamates as aminyl and aminium radical precursors. Cyclizations for synthesis of the pyrrolidine nucleus
作者:Martin Newcomb、Thomas M. Deeb
DOI:10.1021/ja00244a060
日期:1987.5
A partir de [butyl pentene-4yl carbamoyloxy]-1 1H-pyridinethione-2, obtention du radical butyl pentene-4yl aminyle qui permet d'obtenir les butyl pentene-4yl amine, butyl-1 methyl-2 pyrrolidine et butyl-1 pyridyl-2thiomethyl-2 pyrrolidine. Application a la synthese de butyl-1 dimethyl-2,5 pyrrolidine, butyl-1 methyl-2 perhydro indoline et methyl-2 pyrrolizidine a partir des [butyl methyl-1' bentene-4'
A partir de [丁基戊烯-4yl carbamoyloxy]-1 1H-pyridinethone-2, 获得双自由基丁基戊烯-4yl aminyle qui permet d'obtenir les 丁基戊烯-4yl amine, 丁基-1methyl-2 pyrrolidine et 丁基-1 pyridyl -2thiomethyl-2 吡咯烷。应用 a la 合成脱丁基-1 二甲基-2,5 吡咯烷、丁基-1 甲基-2 全氢二氢吲哚和甲基-2 吡咯里西啶 a partir des [丁基甲基-1' 苯-4' 基氨基甲酰氧基]-、[丁基烯丙基- 2、环己基氨基甲酰氧基]-和[烯丙基戊烯-4基氨基甲酰氧基]-1 1H-吡啶硫酮-2
Copper(I)-Catalyzed Intramolecular Addition of N-Chloroamines to Double Bonds under Aprotic Conditions. Towards a Stereoselective Catalytic Radical Reaction
作者:Richard Göttlich
DOI:10.1055/s-2000-7605
日期:——
Copper(I) complexes catalyze the intramolecular addition of N-chloramines to carbon-carbon double bonds under neutral conditions, a reaction that proceeds via a metal complexed aminyl radical. A high diastereoselectivity is obtained in the cyclization step due to the sterically demanding copper complex.
Facile generation of dialkylaminyl radicals from N-hydroxypyridine-2-thione carbamates. Application in kinetic studies of small ring cycloalkylaminyl radical ring openings
作者:Martin Newcomb、Park Seung-Un、Jere Kaplan、Donald J. Marquardt
DOI:10.1016/s0040-4039(01)80910-2
日期:1985.1
The preparation of N-hydroxypyridine-2-thione carbamates and the formation of dialkylaminyl radicalsfrom these species are described and the application of this methodology in kineticstudies of aminyl radical rearrangements is demonstrated.