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Publication Title | PROCESS FOR EPOXIDIZING SUBSTITUTED CYCLOHEXANONES US6482960

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(12>Ulllted States Patent Brechtelsbauer et al.

(54) PROCESSFOREPOXIDIZING SUBSTITUTED CYCLOHEXANONES

(75) Inventors:ClemensMichaelHelmut

Brechtelsbauer,Tonbridge(GB);Paul Oxley,Tonbridge(GB)

(73) Assignee: SmithKlineBeechamp.l.c.(GB)

(*) Notice: Subjecttoanydisclaimer,thetermofthis patent is extended or adjusted under 35

U.S.C. 154(b) by 0 days. 10/069,703

(10)PatentNo.: US 6,482,960B1 (45) Date of Patent: Nov. 19, 2002

(51) Int.Cl.7..C07D303/12 (52) US. Cl. ..549/332

(58) FieldofSearch..549/332

(56) ReferencesCited FOREIGNPATENTDOCUMENTS

W0 WO 98/34584 8/1998 W0 WO 99/18793 * 4/1999

* Cited by examiner

PrimaryExaminer—JosephK.McKane

AssistantExaminer—JenniferC.Mu h 1Py

(74) Attorney, Agent, or Firm—James M. Kanagy; Charles M. I<1I1Z1g

This invention relates to a method for preparing 1-oXaspiro

[2,5]-carbonitriles from ketones using spinning disc reactor technology.

(21) Appl.No.:

(22) PCTFiled;

(86) PCT N05 §371 (‘0(1),

Aug,15,2000 PCT/EP00/07927

(87) PCT Pub‘ NO‘: Wool/14357 PCT Pub, Date; Mar, 1, 2001

(30) ForeignApplicationPriorityData Aug.25,1999 (GB)..9920152

2Claims,1DrawingSheet

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US006482960B1

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thinliquid?lm (process?uid)

channel

counter-current flow(heat transfer(1uid)

Image | PROCESS FOR EPOXIDIZING SUBSTITUTED CYCLOHEXANONES US6482960



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