... The Journal of Organic ... J. Org. ... the use of the in situ activating agent HATU (N-[(dimethylamino)- 1-H-1,2,3-triazolo-[4,5-b]pyridin-1-ylmethylene]-N-methylmethanaminium hexafluorophosphate N-oxide) in the presence of an equimolar amount of the hindered organic base 2,4,6 ...