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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 972226Generated: October 30, 2026

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

https://huagongshe.com/reaction/972226

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 that described in Example 1 (J) 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 procedure provided 0.03 g. of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04052387
Source datasetuspto-grants-1977_10
ORD IDord-b2c8bdd15e0c44e99e1cc50272da92c6
Source noteuspto-grants-1977_10