Hypervalent iodine oxidation of 5-substituted and 5-methyl-4-substituted pyrazol-3 (2 H)-ones. A facile synthesis of 2-alkynoic and 2, 3-allenic esters

RM Moriarty, RK Vaid, P Farid

Index: Moriarty, Robert M.; Vaid, Radhe K.; Farid, Payman Journal of the Chemical Society, Chemical Communications, 1987 , # 10 p. 711 - 712

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Abstract

(Diacetoxyiodo)benzene, PhI(OAc)2, has been shown to ... Oxidation of (la-d) with P~I(OAC)~ -M~OH at -23 "C ... Published on 01 January 1987. Downloaded by google on 29/01/2016 12:01:41. ... View Article Online / Journal Homepage / Table of Contents for this issue ... H H H H H\ / N- N O V R - H (1) AcO OAc ... Scheme 1. Reagents: PhI(OAc)2 (0.02 mo1)-MeOH (dropwise over 45 min), -23"C, then stirred 1 h. ... PhI(OAc)2 followed by reductive elimination and ...

~61%

~61%

~62%

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