Reaction of nickel(H) or copper(H) porphyrins with 3-dimethylamino-acroleinlPOC13 gives meso-(2formylvinyl)-porphyrins, which @ier strong acid treatment give the corresponding benzochlorins. Use of nickel(U) or copper(II} chlorine gives benzoisobacteriochlorins; a modification also gives benzobacter
β¦ LIBER β¦
New and Efficient Syntheses of 4-Carbamoylquinuclidine
β Scribed by Ogura, Katsuyuki; Kanai, Takeo; Nomoto, Seiichiro; Komatsu, Yuhki; Ogura, Katsuyuki
- Book ID
- 111933654
- Publisher
- Japan Institute of Heterocyclic Chemistry
- Year
- 1992
- Tongue
- English
- Weight
- 158 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0385-5414
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Efficient synthesis of 1-, 4-, and 5-caffeoylquinic acid was achieved in three or four steps with suitably protected quinic acid precursors, in overall yields of 41%, 36%, and 60% [from quinic acid (1)]. 1-Caffeoylquinic acid was prepared by esterification of acetone quinide 7 with caffeoyl chloride