New alkyldiphenylmethane protective agent

摘要

Provides an alkyldiphenylmethane protecting agent that facilitates separation and purification after the reaction without solidifying or insolubilizing the compound protecting the functional group. General Formula (1) (In the formula, Y is -OR ¹⁹ (wherein R ¹⁹ represents a hydrogen atom or an active ester type protecting group), -NHR ²⁰ (where R ²⁰ is a hydrogen atom, a straight chain having 1 to 6 carbon atoms or Represents a branched alkyl group or aralkyl group), an isocyanate group, an azide group, or a halogen atom, Z represents a C 1 to C 4 linear or branched alkyl group or alkenyl group, or a cycloalkyl group, R ¹ to At least one of R ¹⁰ represents a group represented by formula (2), and the rest represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; R ¹¹ is a straight chain having 1 to 16 carbon atoms Or a branched chain alkylene group; X represents O or CONR ²¹ (here, R ²¹ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms); A represents formula (3) and the like (here R ¹² , R ¹³ and R ¹⁴ are the same or different, and represent a C 1 to C 6 linear or branched alkyl group or an aryl group which may have a substituent; R ¹⁵ is a single bond or a C 1 to C 3 linear or branched alkylene A group, and R ¹⁶ , R ^17, and R ¹⁸ each represent a linear or branched alkylene group having 1 to 3 carbon atoms).