A simple and efficient procedure for converting a variety of 1,1-diacetates into the corresponding aldehydes was developed. The methodology has been done with zirconium sulfate tetrahydrate-silica gel as catalyst. The temperature plays an important role in these reactions. The phenolic acetate function can selectively be deprotected into phenol.

In this investigation, Nano silica chloride (nano SiO2Cl) has been found to be efficient, chemoselective and recyclable catalyst for facile and simple synthesis of germinal diacetates from aromatic and heteroaromatic aldehydes in shorter reaction durations. The products were obtained in high to excellent yields. This work consistently has the advantages of excellent yields, short reaction time,...

Herein, we explore the potential use of two micelle-forming block copolymers, i.e., Pluronic F-127 and poly(ethylene oxide)-b-poly(caprolactone), for application of fungicide agents. The polymer effect on the in vitro fungicide activity of a series of geranyl orcinol derivatives against Botrytis cinerea has been assessed. The results show that, for all test compounds, the incorporation into mic...

1. Diacetates of the four possible racemates of 4',7-dimethoxyflavan-3,4-diol have been synthesized. 2. Comparison of their nuclear-magnetic-resonance spectra and the ionophoretic mobilities of the diols in borate buffer with those of the corresponding derivatives of guibourtacacidin shows that the natural 4',7-dihydroxyflavan-3,4-diol has a 2,3-cis-3,4-trans configuration, but is accompanied b...

The fungicidal activity of pentachlorophenol and its derivatives against 16 species of fungi representing 14 genera was tested. In relation to pentachlorophenol, no increase in fungistatic activity was found for pentachloroanisole, pentachloronitrobenzene, hexachlorobenzene, pentachlorophenyl acetate, o- and p-chloranil, the three isomeric chlorophenols, 2,6-dichlorophenol, the three isomeric t...