Liquid phosgenation reagent comprising triphosgene and diphosgene
申请人:Lonza Ltd
公开号:EP2581363A1
公开(公告)日:2013-04-17
Preparation and use of a liquid phosgenation reagent.
液体腈化试剂的制备和使用。
PROCESS FOR THE SYNTHESIS OF CHIRAL PROPARGYLIC ALCOHOLS
申请人:Brenner Meinrad
公开号:US20130324763A1
公开(公告)日:2013-12-05
A process for the synthesis of chiral propargylic alcohols.
合成手性丙炔基醇的过程。
PROCESS FOR THE SYNTHESIS OF CYCLIC CARBAMATES
申请人:Brenner Meinrad
公开号:US20130211077A1
公开(公告)日:2013-08-15
The invention is directed to a process for the preparation of a cyclic carbamate starting with o-aminobenzyl alcohol and/or a suitable salt thereof, which is reacted with a cyclisation agent selected from phosgene, diphosgene, triphosgene and mixtures thereof, and in that the reaction carried out in the presence of an aqueous base, and a water-immiscible organic solvent, said organic solvent mainly comprising at least one compound selected from C
2-5
-alkyl C
2-5
-carboxylates and mixtures of at least one C
2-5
-alkyl C
2-5
-carboxylate with at least one C
5-8
-alkane.