Synthesis of alkoxy- and phenylsulfanyl-substituted 1,1-dihalospiro[2.2]pentanes and their reactivity toward methyllithium
作者:K. N. Sedenkova、E. B. Averina、I. S. Borisov、Yu. K. Grishin、V. B. Rybakov、T. S. Kuznetsova、N. S. Zefirov
DOI:10.1134/s1070428012100016
日期:2012.10
of new alkoxy- and phenylsulfanyl-substituted 1,1-dihalospiro[2.2]pentanes bearing different halogen atoms were synthesized. 1,1-Dihalo-4-tert-butoxyspiro[2.2]pentanes reacted with methyllithium at −55 to −10°C to give exclusively 1-tert-butoxy-2-vinylidenecyclopropane. The reaction of 1-bromo-1-fluoro-4-phenylsulfanylspiro[2,2]pentane with methyllithium resulted in replacement of the fluorine atom
合成了许多带有不同卤素原子的新的烷氧基-和苯硫烷基取代的1,1-二卤代螺[2.2]戊烷。1,1-二卤-4-叔丁氧基螺[2.2]戊烷与甲基锂在-55至-10℃下反应,仅得到1-叔丁氧基-2-亚乙烯基环丙烷。1-溴-1-氟-4-苯基硫烷基螺[2,2]戊烷与甲基锂的反应导致氟原子被甲基取代。