Directed Regioselective Carbometallation of 1,2‐Dialkyl‐Substituted Cyclopropenes
作者:Yair Cohen、Ilan Marek
DOI:10.1002/anie.202111382
日期:2021.12.6
The copper-catalyzedcarbomagnesiation reaction of cyclopropenes is a well-established method for the synthesis of stereodefined cyclopropanes. All existing reports to date proceeded towards the formation of the electronically more stable organometallic intermediate. Herein we report a regioselective addition to 1,2-dialkyl-substituted cyclopropene possessing a tethered directing group to direct the
Cyclopropenes for the Synthesis of Cyclopropane-Fused Dihydroquinolines and Benzazepines
作者:Hui-Xin Luo、You-Hong Niu、Xiao-Ping Cao、Xin-Shan Ye
DOI:10.1002/adsc.201500203
日期:2015.9.14
for the construction of cyclopropane‐fused dihydroquinolines was established by a novel Povarov‐typethree‐component reaction of aromatic aldehydes, anilines and cyclopropenes in the presence of trifluoromethanesulfonic acid. The reaction proceeded in a regioselective and diastereoselective manner. Furthermore, the dihydroquinolines were smoothly converted to benzazepine derivatives via a ring opening/isomerization
[EN] CYCLOPROPENE AMINO ACIDS AND METHODS<br/>[FR] ACIDES AMINÉS DE CYCLOPROPÈNE ET PROCÉDÉS
申请人:MEDICAL RES COUNCIL
公开号:WO2015136265A1
公开(公告)日:2015-09-17
The invention relates to a polypeptide comprising an amino acid having a cyclopropene group wherein said cyclopropene group is joined to the amino acid via a carbamate group. Suitably the cyclopropene group is a 1,3-disubstituted cyclopropene such as a 1,3-di methylcyclopropene. Suitably the cyclopropene group is present as a residue of a lysine amino acid. The invention also relates to methods of making the polypeptides. The invention also relates to an amino acid comprising cyclopropene wherein said cyclopropene group is joined to the amino acid moiety via a carbamate group.
Indolo-quinoline boron difluoride dyes: synthesis and spectroscopic properties
作者:Hui-Xin Luo、Youhong Niu、Xiaojie Jin、Xiao-Ping Cao、Xiaojun Yao、Xin-Shan Ye
DOI:10.1039/c6ob00623j
日期:——
Novel indolo-quinoline compounds were efficiently prepared via Povarov-type reaction, and the structures were further modified by Suzuki coupling reaction. The corresponding BF2-rigidified dyes were prepared and their spectroscopic properties were...
申请人:DAEGU CATHOLIC UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION 대구가톨릭대학교산학협력단(220070042373) BRN ▼515-82-06711
公开号:KR20150116427A
公开(公告)日:2015-10-15
본 발명은 식물의 에틸렌 작용을 억제하는 시클로프로팬 유도체 및 그 합성방법에 관한 것으로, 시클로프로팬에 속하는 화합물인 2-cyclopropene-1- carboxylic acid ethyl ester(CPE)의 2-alkyl(탄소수 1~10)유도체(alkyl CPE)를 합성하는 단계와; 수확 전 또는 후에 액상 또는 기체상으로 단감 과실에 처리하는 단계와; alkyl CPE가 과실의 실온 저장 중 에틸렌 생성, 호흡, 과육의 연화 등에 미치는 영향을 조사평가함으로써 달성하였고, 따라서 본 발명은 식물에 대한 에틸렌 작용억제제를 제공하는 효과가 있으며 alkyl CPE는 기존의 에틸렌 작용억제제 중 하나인 1-MCP에 비해 상온에서 액상으로 조제하여 분무살포가 가능하며 장기간 보존할 수 있는 뛰어난 효과가 있다.