OBSERVAÇÃO DE HOMODÍMERO DO TIPO BIS-1,3-BENZODIOXONA SINTETIZADO VIA METÁTESE DE OLEFINAS DA PIPERINA CATALISADA POR PRÉ-CATALISADORES DE RU(II) NÃO COMERCIAIS

OBSERVATION OF BIS-1,3-BENZODIOXONE TYPE HOMODIMER SYNTHESIZED VIA PIPERINE OLEFIN METATHESIS CATALYZED BY NON-COMMERCIAL Ru(II) PRE-CATALYSTS. LN-1 and LN-2 are two complexes coordinated to the phosphine amines simultaneously, each with chlorides. PPh3 is amine piperidine (LN-1) perhydroazepine (LN-2). The compounds five-coordinated square pyramidal geometry, in axial plane. were tested for first time as initiator piperine self-metathesis olefin. system variables chosen this study reactional (24, 48 72 h), catalyst:substrate ratio (1:1 1:10 mol) temperature (25 e 50 ºC). Results analyzed by GC-ME. None olefin metathesis product was noted experiments 25 ºC until h, any ration. However, from observed. presented yield of c.a. 29% mixture 39%. interesting unheard, it has 1,3-benzildiaxine groups, interleaved one unsaturated carbon chain. In mol there no formation. results discussed function electronic steric properties ancillary ligand LN1 LN-2.