Basf Aktiengesellschaft

Knoll Aktiengesellschaft

Nicholas John Holman

Stefan Koser

Ralf Klintz

Friedhelm Balkenhohl

Peter Munster

Gerald Bernard Tometzki

John Paul Watts

Christoph Dingler

Arthur Mark Isola

A process for preparing enantiomerically pure alcohols of the formula I (Ia or Ib)

Method for producing alcohols free of enantiomers

A process for preparing enantiomerically pure esters of the formula I (Ia and Ib)

Method for producing esters of triazolopyrimidine derivatives free of enantiomers using vinylesters with lipase

An improved process for the preparation of 1,2,4-triazolo&lsqb;1,5-a&rsqb;pyrimidine compounds comprising the reaction involving a compound of formula II

Process for the preparation of 7-alkoxyalkyl-1,2,4-triazolo&lsqb;1,5-A&rsqb; pyrimidine derivatives

A process for reducing the level of tri-substituted phosphine, arsine and/or stibine oxide from a mixture comprising a desired product and at least one such oxide is provided, comprising the addition of a metal salt to the mixture to form a complex with the oxide, and removing the complex from the mixture. This process has particular utility for removing triphenylphosphine oxide from a mixture--a task that was previously hard to perform.

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Nottingham, United Kingdom

Nicholas John Holman