Dirhodium(II)-Catalyzed (3 + 2) Cycloaddition of the <i>N</i>-Arylaminocyclopropane with Alkene Derivatives
作者:Yi Kuang、Yangbo Ning、Jin Zhu、Yuanhua Wang
DOI:10.1021/acs.orglett.8b00904
日期:2018.5.4
Several (3 + 2) cycloaddition reactions catalyzed by dirhodium(II) complexes between N-arylaminocyclopropane and alkenes derivative have been developed. Preliminary mechanism studies suggest that dirhodium(II) complexes may decrease the bond-dissociation energy (BDE) of the N–H bond of N-arylaminocyclopropanes for N–H bond activation, thus facilitating the formation of N-centered radicals by loss of
Asymmetric synthesis of cyclic β-amino carbonyl derivatives by a formal [3 + 2] photocycloaddition
作者:Leonardo Mollari、Miguel A. Valle-Amores、Ana M. Martínez-Gualda、Leyre Marzo、Alberto Fraile、José Aleman
DOI:10.1039/d1cc05867c
日期:——
reactivity relies on the performance of the substrate-catalyst complex to assist both the enantiocontrol and the photoredox tasks. This transformation led to an enantioselective [3 + 2] photocycloaddition between coordinated α,β-unsaturatedacyl imidazoles and cyclopropylamine derivatives.
Synthesis of bicyclo[3.1.0]hexanes by (3 + 2) annulation of cyclopropenes with aminocyclopropanes
作者:Bastian Muriel、Alec Gagnebin、Jerome Waser
DOI:10.1039/c9sc03790j
日期:——
We report the convergent synthesis of bicyclo[3.1.0]hexanes possessing an all-carbon quaternary center via a (3 + 2) annulation of cyclopropenes with cyclopropylanilines. Using an organic or an iridium photoredox catalyst and blue LED irradiation, good yields were obtained for a broad range of cyclopropene and cyclopropylaniline derivatives. The reaction was highly diastereoselective when using difluorocyclopropenes
Nitrogen-containing heterocyclic compound and use of same
申请人:Shirai Junya
公开号:US08592454B2
公开(公告)日:2013-11-26
The present invention relates to a compound represented by the formula
wherein ring A is a nitrogen-containing heterocycle;
ring B is an aromatic ring optionally having substituent(s);
ring D is an aromatic ring optionally having substituent(s);
L is a group represented by the formula
R2, R3, R4a and R4b are each independently a hydrogen atom, an optionally halogenated C1-6 alkyl group or an optionally halogenated C3-6 cycloalkyl group, or R2 and R3 are optionally bonded via an alkylene chain or an alkenylene chain, or R4a and R4b are optionally bonded via an alkylene chain or an alkenylene chain;
R1 is a hydrogen atom or a substituent;
m and n are each independently an integer of 0 to 5;
m+n is an integer of 2 to 5; and
is a single bond or double bond, or a salt thereof; and the like. The compound has a superior tachykinin receptor antagonistic action, and is useful as an agent for the prophylaxis or treatment of various diseases such as lower urinary tract diseases, digestive tract diseases, central neurological disease and the like.