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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 30252Generated: October 29, 2026

Sodium Methoxide → 6-Methoxy-1,2,3,3a,7,7a-hexahydro-4-thia-2-aza-cyclopenta[alpha]pentalene

https://huagongshe.com/reaction/30252

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium MethoxideHCID 10942334—
Reactant6-Bromo-3,3a,7,7a-tetrahydro-1H-4-thia-2-aza-cyclopenta[alpha]pentalene-2-carboxylic acid ethyl esterHCID 131727031—
CatalystTetrabutylammonium IodideHCID 67553—
SolventMethanolHCID 887—
Product6-Methoxy-1,2,3,3a,7,7a-hexahydro-4-thia-2-aza-cyclopenta[alpha]pentaleneHCID 59789459—

Reaction Steps

The product of step b) (57.8 mg, 0.183 mmol) in MeOH (51 μl) was treated with CuO (7 mg, 0.09 mmol), a 25% solution of sodium methoxide in MeOH (129 μl) and tetra-butylammonium iodide (TBAI) (10 mg) at 100° C. for 12 hours. The reaction mixture was cooled and purified by preparative LC/MS to give the title compound. 1H NMR (300 MHz, CDCl3, ppm) 2.40-2.60 (m, 1H); 2.82-3.01 (m, 2H); 3.05-3.63 (br m, 4H); 3.77 (s, 3H); 3.81-3.98 (br s, 1H); 6.17 (s, 1H); MS calculated for C10H13NOS+H 196, observed 196.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07423056B2
Source datasetuspto-grants-2008_09
ORD IDord-78650246e50849b182f0a801d847290d
Source noteuspto-grants-2008_09