73955-79-0

Upstream product

• 555-16-8 4-nitrobenzaldehdye 
• 51056-24-7 (2S,5R)-6-Diazo-3,3-dimethyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid 2,2,2-trichloro-ethyl ester 

Downstream Products

• 109706-83-4 (3S,7aR)-2,2,2-trichloroethyl 2,3,5,7a-tetrahydro-7-methoxy-2,2-dimethyl-6-(4-nitrophenyl)-5-oxopyrrolo<2,1-b>thiazole-3-carboxylate 
• 73955-86-9 (S)-2,2-dimethyl-6-(4-nitro-benzoyl)-7-oxo-2,3,4,7-tetrahydro-[1,4]thiazepine-3-carboxylic acid 2,2,2-trichloro-ethyl ester 
• 73955-83-6 (5R)-3,3-dimethyl-6c-(4-nitro-benzoyl)-7-oxo-(5rH)-4-thia-1-aza-bicyclo[3.2.0]heptane-2c-carboxylic acid 2,2,2-trichloro-ethyl ester 
• 109706-82-3 (3S,7aR)-7-Hydroxy-2,2-dimethyl-6-(4-nitro-phenyl)-5-oxo-2,3,5,7a-tetrahydro-pyrrolo[2,1-b]thiazole-3-carboxylic acid 2,2,2-trichloro-ethyl ester 

Relevant academic research and scientific papers

Reactions of 2,2,2-Trichloroethyl 6-Diazopenicillanate with Aromatic Aldehydes. X-ray Crystal Structures of (3S,8aS)-2,2,2-Trichloroethyl 2,3-Dihydro-6-(4-methoxyphenyl)-2,2-dimethyl-5-oxo-5H,8aH-thiazolooxazine-3-carboxylate and (2S,5S)-2,2,2

Treatment of 6-diazopenicillanate (1) with aromatic aldehydes in the presence of Lewis acids provides spiro epoxides, oxazinones, and thiazepines, the product distribution depending upon the particular aldehyde and Lewis acid catalyst used.The structure o

BORON TRIFLUORIDE CATALYSED REACTIONS OF 2,2,2-TRICHLOROETHYL 6-DIAZOPENICILLANATE WITH AROMATIC ALDEHYDES: REARRANGEMENTS VIA PENAM C(5)-C(6) BOND CLEAVAGE.

The BF3.Et2O catalysed reactions of diazopenicillanate 1 with aromatic aldehydes provide 2,3-dihydrothiazolooxazin-5-ones 4 via C(5)-C(6) cleavage of 6-formylpenicillanates 8.