- Process for the preparation of thiazole derivatives
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The Invention relates to a process for the preparation of a compound of the formula wherein Q, Y, Z, R1, R2, R3, R4and R5are as defined in the specification, which comprises a) reacting a compound of the formula ?with a halogenating agent to form a compound of the formula b) converting a compound of formula (II) by means of a halogenating agent into a compound of the formula ?optionally c) converting the compound of formula (IV) into a compound of formula (III); d) converting a compound of formula (III) by means of a compound of the formula e) converting a compound (IV) by means of a compound (V) into a compound (VI); and f) converting a compound (VI) by means of a chlorinating agent into a compound (I); a compound (IV); to a process for the preparation of a compound (III) and to a process for the preparation of a compound (IV).
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Page column 12
(2008/06/13)
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