Y(OTD3-catalyzed novel Mannich reaction of N-alkoxy carbonylpyrroles, formaldehyde and primary amine hydrochlorides N-R Y(OTD3(10%mmole) +R'CHO+R".HCI R CHNHR N C X Zhuan, J C. Dong, T M. Cheng,R. T Li, Tetrahedron Letters,2001,43(3),461-463Y(OTf)3 -catalyzed novel Mannich reaction of N-alkoxy￾carbonylpyrroles, formaldehyde and primary amine hydrochlorides C. X. Zhuan, J. C. Dong, T. M. Cheng, R. T. Li*, Tetrahedron Letters, 2001, 43(3), 461-463 N R + R'CHO + R"NH2 HCl . Y(OTf)3 (10%mmole) N N R' R" N R CHNHR" R' A B