名称:
                                4-Pivaloylaminobenzyl ether, a new temporary protection for hydroxyl functions
                             
                            
                                摘要:
                                4-Pivaloylaminobenzyl (PAB) group is a new benzyl-type protecting group which can be introduced either by initial introduction of 4-nitrobenzyl group followed by reduction and N-acylation or by the reaction of a hydroxyl compound with the corresponding halogenide or trichloroacetimidate.  PAB ethers have higher acid stability than 4-methoxybenzyl ethers but are readily cleaved with DDQ in a manner similar to the latter.
                             
                                                            
                                    DOI:
                                    10.1016/0040-4039(91)80616-e