Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5229539 | Tetrahedron | 2005 | 16 Pages |
Abstract
Reactions of guaiazulene (1) with methyl terephthalaldehydate (2) and 2-hydroxy- and 4-hydroxybenzaldehydes (3 and 4) in methanol in the presence of hexafluorophosphoric acid at 25 °C for 2 h under aerobic conditions give the corresponding monocarbocation compounds 5-7 in 94, 89 and 97% yields, respectively. The title studies are reported.
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Authors
Shin-ichi Takekuma, Yasuhito Hata, Toyosato Nishimoto, Eiko Nomura, Masato Sasaki, Toshie Minematsu, Hideko Takekuma,