Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn¡¯t involve a screen. 20485-41-0, C5H5NO2S. A document type is Patent, introducing its new discovery., Formula: C5H5NO2S
Disclosed herein is a process for the preparation of a thiazolecarboxylic acid chloride represented by the following general formula (II): STR1 wherein R1 represents a hydrogen or halogen atom, a lower alkyl group, a lower alkoxy group, or a lower alkyl group substituted by a halogen atom or lower alkoxy group, and R2 represents a hydrogen atom, a lower alkyl group, or a lower alkyl group substituted by a halogen atom or lower alkoxy group, which comprises reacting a thiazolecarboxylic acid represented by the following general formula (I): STR2 wherein R1 and R2 have the same meanings as defined with respect to formula (II), with phosgene or trichloromethyl chloroformate in the presence or absence of a catalyst.
Disclosed herein is a process for the preparation of a thiazolecarboxylic acid chloride represented by the following general formula (II): STR1 wherein R1 represents a hydrogen or halogen atom, a lower alkyl group, a lower alkoxy group, or a lower alkyl group substituted by a halogen atom or lower alkoxy group, and R2 represents a hydrogen atom, a lower alkyl group, or a lower alkyl group substituted by a halogen atom or lower alkoxy group, which comprises reacting a thiazolecarboxylic acid represented by the following general formula (I): STR2 wherein R1 and R2 have the same meanings as defined with respect to formula (II), with phosgene or trichloromethyl chloroformate in the presence or absence of a catalyst.
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Reference£º
Thiazole | C3H5838NS – PubChem,
Thiazole | chemical compound | Britannica