01141nas a2200217 4500008004100000022001400041245011800055210006900173260010600242300001200348490000700360520028000367653002400647653001400671653003500685653002200720653001600742100002600758700001900784856012000803 2009 eng d a0040-403900aNovel synthesis of coumarins employing triphenyl(alpha-carboxymethylene)-phosphorane imidazolide as a C-2 synthon0 aNovel synthesis of coumarins employing triphenylalphacarboxymeth aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcJAN a236-2380 v503 a
A novel one-pot synthesis of coumarins via intramolecular Wittig cyclization from the reaction of phenolic compounds containing ortho-carbonyl group and triphenyl(alpha-carboxy methylene)phosphorane imidazolide is described. (c) 2008 Elsevier Ltd. All rights reserved.
10aCarbonyldiimidazole10aCoumarins10aIntramolecular Wittig reaction10aPhenolic compound10aPhosphorane1 aUpadhyay, Puspesh, K.1 aKumar, Pradeep uhttp://library.ncl.res.in/content/novel-synthesis-coumarins-employing-triphenylalpha-carboxymethylene-phosphorane-0