Unsaturated alkyl bromides of type 1 undergo a stereoselective ring closure when treated with a MnBr2 (5 mol%)/CuCl (3 mol%) catalytic mixed metal system and diethylzinc at 60 degrees C in DMPU affording five membered carbo- and heterocycles. An alternative Ni-catalyzed cyclization of bromoalkylketones is also described. Remarkably in this case, the iodine-zinc exchange could be performed with EtZnBr instead of pyrophoric Et(2)Zn. Copyright (C) 1996 Elsevier Science Ltd
Carbonyl-initiated cyclization of tetraalkylstannanes
作者:Timothy L. Macdonald、Claire M. Delahunty、Keith Mead、Dale E. O'Dell
DOI:10.1016/s0040-4039(00)99494-2
日期:1989.1
STABILISIERUNG IOD-HALTIGER VERBINDUNGEN
申请人:LANXESS Deutschland GmbH
公开号:EP2413697A1
公开(公告)日:2012-02-08
STABILISIERUNG VON IOD ENTHALTENDEN VERBINDUNGEN MIT STICKSTOFF ENTHALTENDEN POLYMEREN
申请人:LANXESS Deutschland GmbH
公开号:EP2779830A1
公开(公告)日:2014-09-24
[DE] STABILISIERUNG IOD-HALTIGER VERBINDUNGEN<br/>[EN] STABILIZATION OF COMPOUNDS COMPRISING IODINE<br/>[FR] STABILISATION DE COMPOSÉS IODÉS
申请人:LANXESS DEUTSCHLAND GMBH
公开号:WO2010112387A1
公开(公告)日:2010-10-07
Verwendung von Aziridinen zur Stabilisierung von Iod-haltigen Verbindungen, insbesondere Biozide.