Reactions of 4-tosyl-2-phenyl-5-chloro-1,3-thiazole with N-, O-, and S-nucleophiles
摘要:
The accessible two-center electrophilic substrate 4-tosyl-2-phenyl-5-chloro-1,3-thiazole reacts regioselectively with N-, O-, and S-nucleophiles to eliminate a chloride ion. The analog of this substrate, 4-tosyl- 2-phenyl-5-p-chlorophenylsulphonyl-1,3-thiazole, reacts with "soft" and "hard" nucleophiles differently: with the participation of C(5) or C(4) center, respectively, that seems to be caused by the principle of "symbiosis" in the transition state.
Reactions of 4-tosyl-2-phenyl-5-chloro-1,3-thiazole with N-, O-, and S-nucleophiles
摘要:
The accessible two-center electrophilic substrate 4-tosyl-2-phenyl-5-chloro-1,3-thiazole reacts regioselectively with N-, O-, and S-nucleophiles to eliminate a chloride ion. The analog of this substrate, 4-tosyl- 2-phenyl-5-p-chlorophenylsulphonyl-1,3-thiazole, reacts with "soft" and "hard" nucleophiles differently: with the participation of C(5) or C(4) center, respectively, that seems to be caused by the principle of "symbiosis" in the transition state.