Ciba-geigy Corporation

Syngenta Crop Protection Ag

Novartis Corporation

Wolfgang Stutz

Willy Meyer

Hugo Ziegler

Thomas James Hoffman

Beat Jau

Edouard Godineau

Regis Jean Georges Mondiere

Rudolf Waditschatka

Denis Neff

Sujit Kumar Ghorai

Bernard Wirz

Sebastien Burki

Remy Gressly

Matthias Von Frieling

Klas Winter

Anup Jawalekar

The present invention relates to a process according to Scheme 1 for the preparation of microbiocidal 5-trifluoromethyl-1,2,4-oxadiazole derivatives of formula (I) suitable for use, e.g., as active ingredients, which have microbiocidal activity, in particular, fungicidal activity.

Process for the preparation of microbiocidal oxadiazole derivatives

Process for the preparation of arylacetic ester derivatives via

A process for the preparation of 3-hydroxyoxetanes of formula I ##STR1## wherein R.sub.9 and R.sub.10 are each independently of the other hydrogen or C.sub.1 -C.sub.4 alkyl, by

Process for the preparation of 3-hydroxyoxetanes

2-(2-haloethylthio)-phenylsulfonamides of formula I ##STR1## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.5 alkyl or C.sub.2 -C.sub.5 alkenyl and Z is hydrogen, fluorine or chlorine, are prepared by converting a phenylsulfonamide of formula II ##STR2## wherein Y is a tertiary alkyl group or a silyl group in succession and without isolating intermediates, with

Process for the preparation of phenylsulfonamides

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Munchwilen, Switzerland

Wolfgang Stutz