GB701150A - 3-substituted-3,4-dihydro-coumarins and process for the manufacture thereof - Google Patents

3-substituted-3,4-dihydro-coumarins and process for the manufacture thereof

Info

Publication number
GB701150A
GB701150A GB1428653A GB1428653A GB701150A GB 701150 A GB701150 A GB 701150A GB 1428653 A GB1428653 A GB 1428653A GB 1428653 A GB1428653 A GB 1428653A GB 701150 A GB701150 A GB 701150A
Authority
GB
United Kingdom
Prior art keywords
reacting
carbalkoxy
general formula
radical
compounds
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
GB1428653A
Inventor
Aaron Cohen
Basil Heath-Brown
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.)
Roche Products Ltd
Original Assignee
Roche Products Ltd
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 Roche Products Ltd filed Critical Roche Products Ltd
Priority to GB1428653A priority Critical patent/GB701150A/en
Publication of GB701150A publication Critical patent/GB701150A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/78—Ring systems having three or more relevant rings
    • C07D311/92—Naphthopyrans; Hydrogenated naphthopyrans

Abstract

The invention comprises compounds of the general formula <FORM:0701150/IV (b)/1> wherein X is a carbalkoxy other than carbethoxy, carbobenzyloxy or nitrile radical. Compounds of that formula, where X may also be a carbalkoxy radical in general, are produced by reacting a compound of the general formula <FORM:0701150/IV (b)/2> with an alkali-metal derivative of a compound of the formula CH2(X)Z wherein Z is a carbalkoxy radical. The reaction may be carried out in solution, e.g. in xylene. In examples compounds of the first general formula above in which X represents carbethoxy, nitrile and carbobenzyloxy radicals respectively are produced by reacting a -dimethylaminomethyl-b -naphthol with the sodium derivative of (1) ethyl malonate, (2) ethyl cyanoacetate, and (3) and (4) dibenzyl malonate. The a -dialkylaminomethyl-b -naphthols can be prepared by reacting b -naphthol with the appropriate dialkylamine.
GB1428653A 1951-03-22 1951-03-22 3-substituted-3,4-dihydro-coumarins and process for the manufacture thereof Expired GB701150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1428653A GB701150A (en) 1951-03-22 1951-03-22 3-substituted-3,4-dihydro-coumarins and process for the manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1428653A GB701150A (en) 1951-03-22 1951-03-22 3-substituted-3,4-dihydro-coumarins and process for the manufacture thereof

Publications (1)

Publication Number Publication Date
GB701150A true GB701150A (en) 1953-12-16

Family

ID=10038421

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1428653A Expired GB701150A (en) 1951-03-22 1951-03-22 3-substituted-3,4-dihydro-coumarins and process for the manufacture thereof

Country Status (1)

Country Link
GB (1) GB701150A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878138A (en) * 1955-09-28 1959-03-17 Bayer Ag Method of brightening material
US4892923A (en) * 1988-02-22 1990-01-09 Eastman Kodak Company Polyester compositions containing the residue of a naphthopyran compound and shaped articles produced therefrom

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878138A (en) * 1955-09-28 1959-03-17 Bayer Ag Method of brightening material
US4892923A (en) * 1988-02-22 1990-01-09 Eastman Kodak Company Polyester compositions containing the residue of a naphthopyran compound and shaped articles produced therefrom

Similar Documents

Publication Publication Date Title
ES439017A1 (en) Pyrimidines
GB904484A (en) Improvements in or relating to naphthanilides
GB701150A (en) 3-substituted-3,4-dihydro-coumarins and process for the manufacture thereof
ES373764A1 (en) 1-fluoroacetylamino-2 2 2-trichloro-ethyl ureas
GB1019784A (en) New benzene-sulphonyl-semicarbazides
GB831001A (en) N-alkyl monothiooxamides
ES334953A1 (en) A process for the preparation of 3-nitro-4-halophenol derivatives
GB653319A (en) Improvements in or relating to the manufacture of malonates and cyanoacetates
GB1345645A (en) Diamido amino sulphonates and preparation thereof
GB981536A (en) Process for the preparation of 2,4-diamino-6-cyano-triazines
GB1104323A (en) 3-phenylpyrrole derivatives and process for preparing the same
ES287547A1 (en) Procedure for the production of N- (2,3-dimethylene) antranilic acid and its salts (Machine-translation by Google Translate, not legally binding)
GB1254928A (en) beta-ALKOXYACRYLIC ACID AMIDES
GB1094810A (en) Unsaturated 4,5-seco-steroid compounds, and processes for their preparation
GB679864A (en) Improvements in or relating to a method for the vulcanization of rubber
GB1133073A (en) Process for the production of thiamine derivatives
ES368590A1 (en) Procedure for the preparation of tetracyclic derivatives. (Machine-translation by Google Translate, not legally binding)
GB853374A (en) Benzimidazolium compounds
ES240536A1 (en) Procedure for the production of cyclhexilamine compounds. (Machine-translation by Google Translate, not legally binding)
GB976955A (en) Production of 3-aryl-4-halopyridazones-(6)
GB853783A (en) New piperazine derivatives and process for the preparation thereof
GB1073485A (en) New 1-subustituted cycloheptimidaszol-2(1h)-one compounds and a process for the same
GB683594A (en) The manufacture of substituted iminazoles
GB1331218A (en) N-arylureas a process for their prepatation and their use as herbicides
GB1086399A (en) Novel ª‡-substituted 2-pyridinethioacetamides and a process for their preparation