ES474071A2 - Procedure for the preparation of 2- (2'2'2'-trihalogenetil) -4-halogenciclobutan 1 ona. (Machine-translation by Google Translate, not legally binding) - Google Patents

Procedure for the preparation of 2- (2'2'2'-trihalogenetil) -4-halogenciclobutan 1 ona. (Machine-translation by Google Translate, not legally binding)

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Publication number
ES474071A2
ES474071A2 ES474071A ES474071A ES474071A2 ES 474071 A2 ES474071 A2 ES 474071A2 ES 474071 A ES474071 A ES 474071A ES 474071 A ES474071 A ES 474071A ES 474071 A2 ES474071 A2 ES 474071A2
Authority
ES
Spain
Prior art keywords
procedure
formula
translation
tribromoethyl
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES474071A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
Ciba Geigy AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ciba Geigy AG filed Critical Ciba Geigy AG
Priority to ES474071A priority Critical patent/ES474071A2/en
Publication of ES474071A2 publication Critical patent/ES474071A2/en
Expired legal-status Critical Current

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  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Procedure for the synthesis of 2- (2``, 2'', 2``-tribromoethyl) 4-chlorocyclobutan -1-one of formula Ia ** formula ** in which one of the radicals R1 and R2 means methyl and the other signifies hydrogen or methyl or R1 and R2 together signify an alkylene group with 2 to 4 carbon atoms. The 2- (2``, 2'', 2``-tribromoethyl) -4-chlorocyclobutan-1-ones of the formula Ia are valuable intermediates, which like 2- (2'', 2``, 2'' - tribromoethyl) -4-bromocyclobutan-1-one of formula I synthesized by the procedure of the application indicated above can be converted in a known way (Favorski reaction), by heating with bases (such as alkali metal hydroxides and alcoholates of metalalkaline) in 2- (2``, 2'' - dibromovinyl) -cyclopropan-1-carboxylic acids and respectively their esters, which, in turn, in the subsequent reaction with appropriate alcohols (for example, alcohol m- phenoxy-alpha-cyanobenzyl), are transformed into insecticidal esters. (Machine-translation by Google Translate, not legally binding)
ES474071A 1978-10-10 1978-10-10 Procedure for the preparation of 2- (2'2'2'-trihalogenetil) -4-halogenciclobutan 1 ona. (Machine-translation by Google Translate, not legally binding) Expired ES474071A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES474071A ES474071A2 (en) 1978-10-10 1978-10-10 Procedure for the preparation of 2- (2'2'2'-trihalogenetil) -4-halogenciclobutan 1 ona. (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES474071A ES474071A2 (en) 1978-10-10 1978-10-10 Procedure for the preparation of 2- (2'2'2'-trihalogenetil) -4-halogenciclobutan 1 ona. (Machine-translation by Google Translate, not legally binding)

Publications (1)

Publication Number Publication Date
ES474071A2 true ES474071A2 (en) 1980-01-16

Family

ID=8476896

Family Applications (1)

Application Number Title Priority Date Filing Date
ES474071A Expired ES474071A2 (en) 1978-10-10 1978-10-10 Procedure for the preparation of 2- (2'2'2'-trihalogenetil) -4-halogenciclobutan 1 ona. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES474071A2 (en)

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Effective date: 20170707