Dipolarophilic behaviour of (arylsulfonyl)allenes towards nitrilimines
作者:Gianluigi Broggini、Giorgio Molteni
DOI:10.1039/b001947j
日期:——
The dipolarophilic behaviour of 1-[2-(acetylamino)phenylsulfonyl]propa-1,2-diene 1 towards a series of nitrilimines is here described. Mechanistic possibilities for the formation of pyrazolic products 4–7 are discussed.
A process for producing an aromatic compound is disclosed, which comprises coupling an aromatic sulfinic acid or a salt thereof with an aromatic halogen compound having at least one halogen atom attached to a carbon atom of the aromatic nucleus thereof or a vinyl group-containing halogen compound having at least one halogen atom attached to a carbon atom of said vinyl group in the presence of a catalyst compound containing an element selected from the platinum group. metals.
[DE] VERBESSERTES VERFAHREN ZUR HERSTELLUNG VON PARABASE-ESTER<br/>[EN] IMPROVED METHOD FOR PRODUCING PARABASE ESTERS<br/>[FR] AMELIORATION D'UN PROCEDE DE PRODUCTION D'ESTER PARABASE
申请人:AVENTIS RESEARCH & TECHNOLOGY GMBH & CO. KG
公开号:WO1999006363A1
公开(公告)日:1999-02-11
(DE) Die Erfindung betrifft ein Verfahren zur Sulfochlorierung von Acetanilid dadurch gekennzeichnet, daß man Acetanilid in schmelzflüssiger Form in einen Reaktionsbehälter einträgt und mit Chlorsulfonsäure und Thionylchlorid umsetzt und die Zwischenprodukte in feuchter Form kontinuierlich ohne Handhabung von Gebinden weiterverarbeitet.(EN) The invention relates to a method for sulfochlorinating acetanilide, characterised in that the acetanilide is introduced into a reaction vessel in fused form and then reacted with chlorosulfonic acid and thionyl chloride. The intermediate products are processed further in a damp state, continuously, without handling drums.(FR) L'invention concerne un procédé de sulfochloration d'acétanilide, selon lequel on introduit de l'acétanilide en fusion dans un contenant de réaction où on le fait réagir avec de l'acide chlorosulfonique et du chlorure de thionyle. Les produits intermédiaires continuent à être traités sous forme humide sans manipulation des cartouches.