The one electron oxidations of benzylphenylether (), 2-phenylethyl phenylether () and 2-(4-methoxyphenyl)ethylphenylether () promoted (a) by cerium(IV) ammonium nitrate (CAN) in AcOH, (b) electrochemically in AcOH-MeCN/AcOK and (c) photochemically in MeCN, in the presence of 9,10-dicyanoanthracene (DCA), have been investigated. With benzaldehyde forms, under all the reaction conditions, accompanied
Enzymatic aminolysis of racemic secondary alcohol ester derivatives with racemic amines leads to the resolution, in one reaction, of the alcohol and the amine with very high enantioselectivity. (C) 2000 Elsevier Science Ltd. All rights reserved.
METHOD FOR PRODUCING POLYETHERESTER CARBONATE POLYOLS
申请人:BAYER INTELLECTUAL PROPERTY GMBH
公开号:US20140329987A1
公开(公告)日:2014-11-06
The present invention relates to a method for producing polyetherester carbonate polyols by means of catalytic addition of carbon dioxide, alkylene oxides and cyclic anhydrides to H-functional starter compounds in the presence of double metal cyanide (DMC) catalysts.