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# United States Patent c191 

# Kruse 

# [54] HOMOGENEOUS HYDROGENATION PROCESS 

[75) Inventor: Walter M. Kruse, Wilmington, Del. 

[73] Assignee: ICI United States Inc., Wilmington, Del. 

[22) Filed: Nov. 7, 1975 

[21] Appl. No.: 629,885 

[63] Continuation-in-part of Ser. No. 407,871, Oct. 19, 1973, Pat. No. 3,935,284. 

[52) U.S. CL ....................... 260/618 D; 252/431 P; 260/618 H; 260/633; 260/635 A 2 

[51] Int. Cl. ••••••••••••••••••• C07C 29/00; C07C 29/14 B, 635 A, 

[58) Field of Search ....... 260/618 H, 638 260/621 K, 618 D, 633; 252/431 P 

## [56) References Cited 

<img src='content_image/943502.jpg'>

## Related U.S. Application Data 

## UNITED STATES PATENTS 

<img src='content_image/943503.jpg'>

Primary Examiner-Norman Morgenstern 

## [57] ABSTRACT 

A homogeneous hydrogenation process is disclosed. The process, which is useful in the preparation of hy› drogenated derivatives of compounds having one of the following formulas 

<img src='content_image/943509.jpg'>

wherein R is -Cl, -Br, -F, or -OH, comprises con› tacting a solution of one of these compounds with hy› drogen in the presence of a catalyst comprising a ruthe› nium triphenyl phosphine complex and a strong acid. 

## 17 Claims, No Drawings 

# [II] 4,024,193 

# [45) May 17, 1977 

