Stereoselective reactions of phthalimido-substituted radicalsderivedfrom (±)-threonine with different radical traps are reported (Scheme 3, Table 1). A strong influence of the nature of the radical trap on the stereoselectivity was noticed. Small nucleophilic radical traps gave preferentially the syn products. The observed selectivities are explained with the A1,3 strain model and depend on steric
Mixtures and compositions suitable for controlling Hylotrupes bajulus and Pyrrhidium sanguineum
申请人:BASF Aktiengesellschaft
公开号:US06245328B1
公开(公告)日:2001-06-12
A mixture containing one stereoisomer of 3-hydroxyhexan-2-one and two stereoisomers of hexane-2,3-diol, especially (3R)-3-hydroxy-hexan-2-one, (2R,3R)-hexane-2,3-diol and/or (2R,3R)-hexane-2,3-diol and compositions containing them and the use of the mixture and of the compositions for controlling Hylotrupes bajulus and Pyrrhidium sanguineum by means of the monitoring, capture or mating disruption method are described.