Bis(acetylacetonato)dioxomolybdenum(VI) catalysed rearrangement of methylbutynol in the presence of ultrasound

被引：8

作者：

Bonrath, W ^{[1
]}

Schiefer, G ^{[1
]}

机构：

[1] F Hoffmann La Roche & Co Ltd, Vitamins & Fine Chem Div, Chem Res Proc Technol, CH-4070 Basel, Switzerland

来源：

ULTRASONICS SONOCHEMISTRY | 1999年 / 6卷 / 1-2期

关键词：

decarboxylation; Meyer-Schuster rearrangement; prenal;

D O I：

10.1016/S1350-4177(98)00023-6

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The molybdenum (VI) catalysed rearrangement of methylbutynol was carried out under the influence of ultrasound (20 kHz). Surprisingly, 2-methylpropene (isobutene) was found as the main product. The formation of isobutene can be explained by rearrangement to prenal, oxidation to 3,3-dimethylacrylic acid and then decarboxylation. 3,3-dimethylacrylic acid was decarboxylated in the presence of ultrasound and a catalyst; without a catalyst or without ultrasound (at 50 degrees C) it remained unchanged. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：89 / 91

页数：3

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