作者:Alan R. Katritzky、Zuoquan Wang、C.Dennis Hall、Yu Ji、Novruz G. Akhmedov
DOI:10.1016/s0040-4039(02)00496-3
日期:2002.4
Methylation of 2,1-benzisoxazole 4,5-dione 4-oxime 2 using dimethyl sulfate in DMF and in the presence of potassium carbonate gave a substantial yield of isoxazolo[3,4-e][2,1]benzisoxazole 4 by an unexpected cyclization reaction of the O-methylation product 3. (C) 2002 Elsevier Science Ltd. All rights reserved.