C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 25/22 (2006.01) C07B 37/04 (2006.01) C07B 39/00 (2006.01) C07C 2/86 (2006.01) C07C 13/567 (2006.01) C07C 17/10 (2006.01) C07C 37/18 (2006.01) C07C 39/17 (2006.01) C07C 43/21 (2006.01) C07C 49/16 (2006.01) C07C 65/36 (2006.01) C07C 211/50 (2006.01) C07C 211/51 (2006.01) C07C 211/52 (2006.01) C07C 215/80 (2006.01) C07C 255/53 (2006.01) C07C 323/38 (2006.01) C07D 221/20 (2006.01) C07D 307/89 (2006.01) C07D 311/96 (2006.01) C07D 335/04 (2006.01) C08G 64/30 (2006.01)
Patent
CA 2122465
2122465 9309074 PCTABS00022 Compounds having acidic protons and a molecular structure which can delocalize the electron density of the conjugate base (target compounds) are chlorinated by contacting such compounds with a perchloroalkane and aqueous base in the presence of a phase transfer catalyst which is a tetraalkylammonium hydroxide. Chlorinated products, preferably gem-dichloro compounds, are produced. The gem-dichloro compounds are useful for alkylation of aromatic compounds. For instance fluorene is chlorinated to form 9,9-dichlorofluorene which is reacted with such compounds as phenol or aniline to form such compounds as 9,9-bis(hydroxyphenyl)fluorene, 9,9-bis(aminophenyl)fluorene, or 9-aminophenyl-9-chlorofluorene.
Brewster Steven L.
Clement Katherine S.
Durvasula V. Rao
Nguyen Hong A.
Puckett Paul M.
Smart & Biggar
The Dow Chemical Company
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