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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 557809Generated: October 29, 2026

Formic Acid → Spiro[1,2-benzisothiazole-3,3'-pyrrolidine]1,1-dioxide

https://huagongshe.com/reaction/557809

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormic AcidHCID 284—
ReactantHCID 66662102HCID 66662102—
CatalystPalladiumHCID 23938—
SolventMethanolHCID 887—
ProductSpiro[1,2-benzisothiazole-3,3'-pyrrolidine]1,1-dioxideHCID 6666196742%

Reaction Steps

To a solution of 1′-benzylspiro[1,2-benzisothiazole-3,3′-pyrrolidine]1,1-dioxide (170 mg, 0.00054 mol) in methanol were added Pd black (150 mg) and formic acid (0.2 mL, 0.005 mol). The resulting reaction mixture was refluxed overnight, then cooled to room temperature, and then filtered and concentrated to give the desired compound (50 mg, 42% Yield). MS (ESI): 225.1 (M+H+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08058288B2
Source datasetuspto-grants-2011_11
ORD IDord-d6252a02097e42588a057318ad45aa5f
Source noteuspto-grants-2011_11