Abnormal aza-Baylis-Hillman reaction of N-tosylated imines with ethyl 2,3-butadienoate and penta-3,4-dien-2-one.
[reaction: see text] The attempted aza-Baylis-Hillman reaction of N-tosylated imines with ethyl 2,3-butadienoate or penta-3,4-dien-2-one gave azetidine derivatives in the presence of DABCO. In the case of the aza-Baylis-Hillman reaction of N-tosylated imines with ethyl 2,3-butandieonate catalyzed by DMAP, novel dihydropyridine derivatives were formed.
Zhao
Gui-Ling
GL
State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China.
Huang
Jin-Wen
JW
Shi
Min
M