Chloroformates, as acylating agents

The value of being able to include cyano and phospho-nato groups among allowed Z substituents is of particular interest. Several model experiments were carried out to guarantee the efficiency of these enol chloroformates as acylating agents. Thus, many carbonates, carbamates, phosphonato esters have been obtained in good to excellent yields from reaction of the new chloroformates with alcohols or phenols, amines, trialkyl phosphites (Ref. 168). 

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