Expeditious and efficient syntheses of pure 4-methyl and 4,6-disubstituted dibenzothiophenes

Autor: Paul Caubere, Sandrine Adach-Becker, Catherine Kuehm-Caubère, Yves Fort
Rok vydání: 1996
Předmět:
Zdroj: Tetrahedron. 52:9087-9092
ISSN: 0040-4020
DOI: 10.1016/0040-4020(96)00459-0
Popis: 4-Lithio and 4,6-dilithiodibenzothiophenes were efficiently obtained by lithiation of dibenzothiophene with BuLi and BuLi-TMEDA, respectively. Very pure 4-methyl- and 4,6-dimethyldibenzothiophenes, substrates of great request in hydrosulfurization studies were easily prepared, on large scale and in excellent yields.
Databáze: OpenAIRE