57336-16-0Relevant articles and documents
Thermal reactions involving 1-azadienes and allenic esters-(II):1a reactions of 3-(N-aryliminomethyl)chromones with allenic esters-tandem reorganization of [2+2] cycloadducts to novel compounds
Kapur, Ashish,Sharma, Vishal,Kaur, Amandeep,Parashar, Poonam,Kanwal, Priyanka,Gupta, Vivek,Ishar, Mohan Paul S.
, p. 4784 - 4787 (2015)
Thermal reactions of 3-(N-aryliminomethyl)chromones (4a-d) with ethyl 2,3-butadienoate (5a) and ethyl 4-phenyl-2,3-butadienoate (5b), on refluxing in dry benzene, afford novel compounds 6a-e, apparently, derived from tandem reorganization of initially formed [2+2] cycloadducts. However, reaction of 4a,d with ethyl 2,3-pentadienoate (5c, R = CH3) under similar condition follows a different course yielding novel molecules 7a,d and 8a,d. Plausible mechanistic rationale for the formation of new molecules is proffered.
Indium triflate: A new catalyst for (4 + 2)-cycloaddition of chromone Schiff's bases
Gadhwal, Sunil,Sandhu, Jagir S.
, p. 2827 - 2829 (2007/10/03)
Indium triflate was introduced as a new catalyst for (4+2)-cycloaddition of chromone Schiff's bases. 3,4-Dihydro-2H-pyran reacted with a variety of chromone Schiff's bases in the presence of indium and scandium triflates at ambient temperature and pressur
STUDIES IN CHROMONE DERIVATIVES: CYCLOADDITION REACTIONS OF 4-OXO-4H-1-BENZOPYRAN-3-CARBOXALDEHYDE IMINES WITH BENZONITRILE OXIDE AND NITRILIMINE OF 4-OXO-4H-1-BENZOPYRAN-3-CARBOXALDEHYDE WITH ALKENES
Baruah, Arpan Kumar,Prajapati, Dipak,Sandhu, Jagir Singh
, p. 1241 - 1246 (2007/10/02)
The chromone imines 1 and benzonitrile oxide reacted regiospecifically to yield Δ2-1,2,4 oxadiazolinyl chromones 2 in good yields.Also the preparation of a novel dipole 6 derived from 3-formylchromone and its cycloaddition reactions with a vari