Lower primary alkanols and their esters in a Ritter-type reaction with nitriles. An efficient method for obtaining N-primary-alkyl amides
作者:Mikhail Y. Lebedev、Mark B. Erman
DOI:10.1016/s0040-4039(02)00057-6
日期:2002.2
N-Primary-alkyl amides RCONHR1 were obtained by a Ritter-type reaction of nitriles RCN with lower primary alkanols R1OH or their esters in the presence of acids.
Halogenated Amide Ester and Internal Electron Donor with Same
申请人:Chen Linfeng
公开号:US20120322964A1
公开(公告)日:2012-12-20
Disclosed are halogenated amide esters that are suitable as internal electron donors in procatalyst compositions. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit improved catalyst activity and/or improved catalyst selectivity and produce propylene-based olefins with broad molecular weight distribution.
A carboxylic acid ester activated in .alpha.-position by a keto, ester or nitrile group, i.e. of the formula ##STR1## where X is COOR.sup.4, COR.sup.5 or CN, and the several R's can have various meanings but only R.sup.1 and R.sup.2 can be hydrogen, is decarbalkoxylated by heating in the presence of a salt, e.g. sodium chloride, and a phosphorus-containing solvent such as a phospholine oxide, phospholane oxide or phosphetane oxide of the formulas ##STR2## wherein a-k and R can have varied definitions. Water is present either at the outset or end of the reaction before product separation. The reaction proceeds smoothly and in good yields.