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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 972227Generated: October 29, 2026

Thionyl Chloride → Methyl 7-phthalimido-3-methylenecepham-4-carboxylate 1-oxide

https://huagongshe.com/reaction/972227

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
ReactantMethyl 3-methyl-2-(2-sulfino-4-oxo-3-phthalimido-1-azetidinyl)-3-butenoateHCID 21314440—
ProductMethyl 7-phthalimido-3-methylenecepham-4-carboxylate 1-oxideHCID 69799987—

Reaction Steps

The same procedure was followed as in Example 1 (I) above except 0.20 g. of methyl 3-methyl-2-(2-sulfino-4-oxo-3-phthalimido-1-azetidinyl)-3-butenoate was employed as the starting material instead of the sulfinyl chloride. The reaction provided 0.10 g. of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04052387
Source datasetuspto-grants-1977_10
ORD IDord-a562cd70441b4a0a895e820c7807393f
Source noteuspto-grants-1977_10