50835-95-5Relevant articles and documents
Phosphine-initiated general base catalysis: Facile access to benzannulated 1,3-diheteroatom five-membered rings via double-Michael reactions of allenes
Szeto, Judy,Sriramurthy, Vardhineedi,Kwon, Ohyun
supporting information; experimental part, p. 5420 - 5423 (2011/11/29)
General base-catalyzed double-Michael reactions of allenes with various dinucleophiles are described. The reactions are facilitated most efficiently by a catalytic amount of trimethylphosphine, affording six types of C2-functionalized benzannulated five-m
Montmorillonite clay catalysis. Part 14. A facile synthesis of 2-substituted and 2,2-disubstituted 1,3-benzodioxoles
Li, Tong-Shuang,Li, Li-Jun,Lu, Bo,Yang, Feng
, p. 3561 - 3564 (2007/10/03)
A series of 2-substituted and 2,2-disubstituted 1,3-benzodioxoles have been synthesised by reaction of catechol and pyrogallol with corresponding aldehydes and ketones catalysed by montmorillonite KSF or K-10. The reactions are completed within 2.7-24 h to give satisfactory yields. Ketones give better yields than aldehydes, although highly sterically hindered ketones and diaryl ketones fail to react at all.