[DE] ISOPENTYLCARBOXANILIDE ZUR BEKÄMPFUNG VON UNTERWÜNSCHTEN MIKROORGANISMEN<br/>[EN] ISOPENTYL CARBOXANILIDES FOR COMBATING UNDESIRED MICRO-ORGANISMS<br/>[FR] ISOPENTYLCARBOXANILIDES POUR LUTTER CONTRE DES MICRO-ORGANISMES INDESIRABLES
申请人:BAYER CROPSCIENCE AG
公开号:WO2005042494A1
公开(公告)日:2005-05-12
Neue Isopentylcarboxanilide der Formel (I) (I) in welcher L, R1, R3 und A die in der Beschreibung angegebenen Bedeutungen haben, mehrere Verfahren zum Herstellen dieser Stoffe und deren Verwendung zum Bekämpfen von unerwünschten Mikroorganismen, sowie neue Zwischenprodukte und deren Her-stellung.
A novel and effective protocol for the synthesis of 2-substituted 3-halo-1H-indoles by PdX2/CuX2-catalyzed annulations of 2-ethynylbenzeneamines has been developed. In the presence of PdX2 and CuX2, the annulation reactions of a variety of 2-ethynylbenzeneamines were conducted in moderate to good yields. It is noteworthy that only N-acetyl-protected 2-ethynylbenzeneamines can undergo the reaction successfully.
Isopentyl carboxanilides for combating undesired micro-organisms
申请人:Dunkel Ralf
公开号:US20070004921A1
公开(公告)日:2007-01-04
This invention relates to novel isopentylcarboxanilides of the formula (I)
in which L, R
1
, R
3
and A are as defined in the disclosure, to a plurality of processes for preparing these compounds and their use for controlling unwanted microorganisms, and to novel intermediates and their preparation.
The highly regio- and stereoselective 6-exo-dig mode cyclization of N-acyl-o-alkynylanilines producing 4-alkylidene-3,1-benzoxazines occurred unpredictably by use of a proper catalyst [Pd(OAc)(2)] and an effective additive (acetic acid) under suitable reaction conditions.