Global patent index - EP 0971937 A1

EP 0971937 A1 2000-01-19 - PROCESS FOR PREPARING ALKYL-1-ALKOXYETHYLPHOSPHINOUS ACIDS

Title (en)

PROCESS FOR PREPARING ALKYL-1-ALKOXYETHYLPHOSPHINOUS ACIDS

Title (de)

VERFAHREN ZUR HERSTELLUNG VON ALKYL-1-ALKOXYETHYLPHOSPHINSÄUREN

Title (fr)

PROCEDE DE PREPARATION D'ACIDES ALKYLE-1-ALCOXYETHYLEPHOSPHINIQUES

Publication

EP 0971937 A1 (DE)

Application

EP 98910711 A

Priority

  • DE 19708722 A
  • EP 9800985 W

Abstract (en)

[origin: DE19708722A1] Alkyl-1-alkoxyethylphosphinous acids are produced by reacting alkyl dichlorophosphanes with acetaldehyde dialkylacetals, then adding water to the reaction mixture. This process gives high yields and is easy to carry out.

IPC 1-7 (main, further and additional classification)

C07F 9/30

IPC 8 full level (invention and additional information)

C07F 9/30 (2006.01)

CPC (invention and additional information)

C07F 9/301 (2013.01)

Citation (search report)

See references of WO 9839340A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

DE 19708722 A1 19980910; EP 0971937 A1 20000119; JP 2001513787 A 20010904; WO 9839340 A1 19980911; ZA 9801771 B 19980904

INPADOC legal status

2001-09-26 [18W] WITHDRAWN

- Date of withdrawal: 20010806

2001-07-18 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010530

2000-01-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991004

2000-01-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB