A Catalytic Tethering Strategy: Simple Aldehydes Catalyze Intermolecular Alkene Hydroaminations
作者:Melissa J. MacDonald、Derek J. Schipper、Peter J. Ng、Joseph Moran、André M. Beauchemin
DOI:10.1021/ja208867g
日期:2011.12.21
Herein we describe a catalytic tethering strategy in which simplealdehyde precatalysts enable, through temporary intramolecularity, room-temperature intermolecular hydroamination reactivity and the synthesis of vicinal diamines. The catalyst allows the formation of a mixed aminal from an allylic amine and a hydroxylamine, resulting in a facile intramolecular hydroamination event. The promising enantioselectivities
Intermolecular Cope-Type Hydroamination of Alkenes and Alkynes using Hydroxylamines
作者:Joseph Moran、Serge I. Gorelsky、Elena Dimitrijevic、Marie-Eve Lebrun、Anne-Catherine Bédard、Catherine Séguin、André M. Beauchemin
DOI:10.1021/ja806300r
日期:2008.12.31
The development of the Cope-typehydroamination as a method for the metal- and acid-free intermolecularhydroamination of hydroxylamines with alkenes and alkynes is described. Aqueous hydroxylamine reacts efficiently with alkynes in a Markovnikov fashion to give oximes and with strained alkenes to give N-alkylhydroxylamines, while unstrained alkenes are more challenging. N-Alkylhydroxylamines also
Ketonitrones via Cope-Type Hydroamination of Allenes
作者:Joseph Moran、Jennifer Y. Pfeiffer、Serge I. Gorelsky、André M. Beauchemin
DOI:10.1021/ol900292r
日期:2009.5.7
The synthesis of ketonitrones from N-alkylhydroxylamines and monosubstituted allenes is accomplished via a Cope-type hydroamination reaction in moderate to good yields. Allenes also undergo a similar reaction with aqueous hydroxylamine to give oximes in excellent yield. DFT calculations support a proposed concerted, five-membered hydroamination process, and calculated transition state energies are in excellent agreement with experimental observations.
Analogues of the Herbicide, <i>N</i>-Hydroxy-<i>N</i>-isopropyloxamate, Inhibit <i>Mycobacterium tuberculosis</i> Ketol-Acid Reductoisomerase and Their Prodrugs Are Promising Anti-TB Drug Leads
作者:Ajit Kandale、Khushboo Patel、Waleed M. Hussein、Shun Jie Wun、Shan Zheng、Lendl Tan、Nicholas P. West、Gerhard Schenk、Luke W. Guddat、Ross P. McGeary
DOI:10.1021/acs.jmedchem.0c01919
日期:2021.2.11
Hajipour; Mohammadpoor-Baltork; Noroallhi, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2001, vol. 40, # 2, p. 152 - 156