Oxygenation of alkynes to α, β-acetylenic ketones with dioxygen catalyzed by N-hydroxyphthalimide combined with a transition metal

S Sakaguchi, T Takase, T Iwahama…

Index: Sakaguchi, Satoshi; Takase, Tomoyuki; Iwahama, Takahiro; Ishii, Yasutaka Chemical Communications, 1998 , # 18 p. 2037 - 2038

Full Text: HTML

Citation Number: 39

Abstract

Table 1 Aerobic oxidation of 1a catalyzed by NHPI under selected conditionsa ... Run Metal Conversion (%) 2a 3a 4a 5a ... 1 – 34 23 69 < 1 < 1 2 Co(acac)2 70 20 75 < 1 < 1 3 Cu(acac)2 69 22 77 < 1 < 1 4 Mn(acac)2 no reaction 5c – 48 18 63 < 1 < 1 6c Co(acac)2 85 2 72 2 2 ... 7c Cu(acac)2 83 5 70 2 3 ... 8c Mn(acac)2 63 4 62 3 5 ... View Article Online / Journal Homepage / Table of Contents for this issue ... Cu(acac)2 plays an important role in the ...