Three-component synthesis of functionalized 5-oxo-4,5-dihydroindeno[1,2-b]pyrans.
Protonation of the reactive intermediates produced in the reaction between alkyl(aryl) isocyanides and dialkyl acetylenedicarboxylates by indan-1,3-dione leads to vinylnitrilium cations, which undergo carbon centered Michael type addition with the conjugate base of the CH-acid to produce functionalized 5-oxo-4,5-dihydroindeno[1,2-b]pyrans.
Yavari
Issa
I
Chemistry Department, Tarbiat Modarres University, PO Box 14115-175, Tehran, Iran. yavarisa@modares.ac.ir
Sirouspour
Mehdi
M
Souri
Sanaz
S
D000480:Alkynes; D003486:Cyanides / Q000737:chemistry*; D005231:Fatty Acids, Unsaturated / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D011714:Pyrans / Q000138:chemical synthesis* / Q000737:chemistry
D000480:Alkynes; D003486:Cyanides; D005231:Fatty Acids, Unsaturated; D011714:Pyrans; C024060:2-butynedioic acid