Facile Conversion of 1-Methyl Group of Guaiazuleue into 1-Formyl Group
作者:Toshiya Okajima、Shinji Kurokawa
DOI:10.1246/cl.1997.69
日期:1997.1
1-Formyl-7-isopropyl-4-methylazulene (4) has been synthesized by DDQ oxidation method of 1-methyl group of guaiazulene (1). The overall synthetic procedures from 1 to 4 were completed within 2 h, and almost quantitative yield was achieved. The compound (4) was inaccessible so far, because of a poor yield of 4 in its total synthesis (<5%, overall), as well as in its preparation by non-selective oxidation of 1 (<1%).