Dimethylformamide → HCID 70605223, compound

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Reaction Steps

To a stirred suspension of 2.40 g. of 6-amino-2,2-dimethyl-3-(5-tetrazolyl)penam in 15 ml. of N,N-dimethylformamide, is added 2.8 ml. of triethylamine. Stirring is continued for a further 15 minutes, and then 2.68 g. of chloromethyl pivalate is added. The mixture is stirred at ambient temperature for 5 hours, and then it is diluted with 100 ml. of water. It is then extracted with ethyl acetate. The extract is washed with water, dried using anhydrous sodium sulfate, and then it is evaporated in vacuo to give a mixture of the title compounds. The individual isomers are obtained by chromatographic separation of the crude product.

Provenance & Evidence