New Syntheses of Some Functionalized and Acetylenic .beta.-Keto Phosphonates
作者:Isabelle Delamarche、Paul Mosset
DOI:10.1021/jo00097a058
日期:1994.9
beta-Keto phosphonates omega-functionalized by an ester group 1a-f, by a hydroxyl 5, and with a triple bond conjugated to the carbonyl group 2a-c were prepared by reacting dimethyl (lithiomethyl)phosphonate (3) with adequate electrophiles. Cyclic anhydrides such as succinic, and- glutaric anhydrides were employed for the synthesis of the two first homologs 1a and 1b. To obtain the other longer homologs 1c-f, 3-acylthiazolidine-2-thiones 7a-d easily prepared using cheap 2-mercaptothiazoline proved to be the electrophiles of choice. On the other hand, the synthesis of keto phosphonates 2a-c required the use of N-methoxy-N-methylamides.
NAGAO YOSHIMITSU; KAWABATA KOHJI; SENO KAORU; FUJITA ELICHI, J. CHEM. SOC. PERKIN TRANS., PART 1, 1980, NO 11 2470-2473
作者:NAGAO YOSHIMITSU、 KAWABATA KOHJI、 SENO KAORU、 FUJITA ELICHI
DOI:——
日期:——
Delamarche Isabelle, Mosset Paul, J. Org. Chem, 59 (1994) N 18, S 5453-5457