Addition of Hydrogen Chloride and Deuterium Chloride to 2-exo-Methoxy-5-norbornene.

Calcium Chloride catalyzed Intramolecular Oxa Michael addition of 2’-Hydroxychalcone to Flavanone

An efficient cyclization of 2’-hydroxychalcone to flavanone using calcium chloride as a catalyst was developed. The scope of the reaction was studied with substituted 2’-hydroxychalcone and these chalcones was converted into corresponding flavanone in good yield. The merits of this method are inexpensive and easily available catalyst, easy workup procedure, avoid use of toxic solvent

Calcium Chloride faciled Intramolecular Oxa addition of 2’-Hydroxychalcone to Flavanone

Calcium Chloride catalyzed Intramolecular Oxa Michael addition of 2’-Hydroxychalcone to Flavanone

An efficient cyclization of 2’-hydroxychalcone to flavanone using calcium chloride as a catalyst was developed. The scope of the reaction was studied with substituted 2’-hydroxychalcone and these chalcones was converted into corresponding flavanone in good yield. The merits of this method are inexpensive and easily available catalyst, easy workup procedure, avoid use of toxic solvent. 

2-Amino-5-cyano­pyridinium chloride

In the crystal structure of the title compound, C(6)H(6)N(3) (+)·Cl(-), cohesion is maintained by cation-anion N-H⋯Cl and cation-cation N-H⋯N hydrogen bonds, which link the ions into a three-dimensional network.

3-(3,4-Dihydroxyphenyl)-1-methoxy-1-oxopropan-2-aminium chloride

In the title compound, C(10)H(14)NO(4) (+)·Cl(-), the benzene ring makes a dihedral angle of 64.68 (4)° with the methyl-amino-propano-ate unit, which is bonded to the catechol ring via a methyl-ene C atom. A strong intra-molecular O-H⋯O hydrogen bond occurs. In the crystal, O-H⋯O, N-H⋯Cl and O-H⋯Cl hydrogen bonds and weak C-H⋯O inter-actions link the mol-ecules into a three-dimensional network.