The iridium-catalyzed sequential allylic amination of substrates having two allylic carbonate moieties proceeded smoothly, providing the novel method for synthesis of azacycles.
Macrocyclic ketones as fragrance materials and methods for making same
申请人:Takasago International Corporation
公开号:US06200254B1
公开(公告)日:2001-03-13
Novel macrocyclic diene ketone compounds useful as fragrance materials are described having the following general formula (I):
where R1, R2, R3 and R4 are each either a hydrogen atom or a C1 to C4 alkyl, a is the integer 1 or 2 and b is an integer in a range from 1 to 6. Novel pathways are described for synthesizing these macrocyclic diene ketones, as well as saturated and mono-unsaturated macrocyclic ketones having the following general formula (IV):
where R1, R2, R3 and R4 are each independently a hydrogen atom or a C1 to C4 alkyl, a is the integer 1 or 2 and b is an integer in a range from 1 to 6.