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Reductive cyclization of the disilane (VII), which is prepared as outlined in the reaction scheme from diisopropylaniline (I) and the silane (V), yields the tetrasilabicyclobutane (IX).

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

The aldol reaction of the methyl ketone (I) with the aldehydes (III) or (V) is mediated via enolate formation with the borolanyl triflates (II).

The title compound (III), which is synthesized as shown in the scheme, reacts with water to give the hydrate (IV).

The asym. reduction of the ketones (I) or (II) can be achieved (→ (VI), (VII), in part isolated as the respective benzoates or acetates) using a system consisting of the species (IV) + (V) generated from the dihydroborate (III) as shown in the scheme.

Enantiomerically pure polyhydroxylated natural products are synthesized using a reiterative two‐carbon extension cycle consisting of four key transformations.

The title compound (IV), prepared in situ or in isolated form from the pseudoephedrine derivative (II) (space group P212121, Z=4), as well as its optical antipode react with a variety of achiral aldehydes to yield the corresponding allylboration products with uniformly high chemical yields and optical purities.

The aldehyde (I) reacts with permanganate in the presence of dihydrogen phosphate to produce the carboxylic acid (II).

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.