Isolation of an inclusion complex of naphthol and its benzoate as an intermediate in the solvent-free benzoylation reaction of naphthol.

Solvent-free benzoylation of naphthol was found to proceed via an inclusion complex intermediate of the naphthol and its benzoate by IR spectral monitoring.

Methyl 3,6-di-O-pivaloyl-alpha-D-mannopyranoside.

The X-ray crystal structure analysis of the title compound, C(17)H(30)O(8), revealed a (4)C(1) conformation of the pyranosyl ring [Cremer-Pople puckering parameters of Q = 0.568 (2) A, theta = 5.1 (2) and phi = 218 (3) degrees ]. The structure shows no deviations from the geometric parameters of pyranoside carbohydrates. The hydroxyl groups participate in O-H.O hydrogen bonds, forming a two-dimensional pattern [O.O = 2.811 (3) and 2.995 (3) A].