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5792202 
Journal Article 
Regioselective annulation of propargyl alcohols with ambident-enols: A Ca(II)-catalyzed trisubstituted benzochromene synthesis 
Yaragorla, S; Pareek, A; Dada, R 
2017 
Tetrahedron Letters
ISSN: 0040-4039
EISSN: 1873-3581 
58 
49 
4642-4647 
Propargyl alcohols; Ambident nucleophiles; Benzochromenes; Calcium catalysis; Claisen rearrangement