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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2400036Generated: November 3, 2026

9H-Fluoren-9-ylideneacetic acid → HCID 22856181, compound

https://huagongshe.com/reaction/2400036

Reaction equation

Participants

RoleNameHCIDCharge
Reactant9H-Fluoren-9-ylideneacetic acidHCID 96792—
Reactant(3S,4R)-4-amino-3-hydroxy-2,2-dimethyl-chroman-6-carbonitrileHCID 10943936—
ProductHCID 22856181HCID 22856181—

Reaction Steps

The title compound was prepared from (3S-trans)-4-amino-3,4-dihydro-3-hydroxy-2,2-dimethyl-2H-1-benzopyran-6-carbonitrile (the title B compound of Example 1) and 2-(9H-fluoren-9-ylidene)acetic acid by the same method as described for the title compound of Example 2. The product was obtained as a light yellow solid, m.p. >300° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05453421
Source datasetuspto-grants-1995_09
ORD IDord-e874093d480e45a79a60e9c3fb995703
Source noteuspto-grants-1995_09