Diphosphines based on an inherently chiral calix[4]arene scaffold: synthesis and use in enantioselective catalysis
作者:Cedric Dieleman、Stéphane Steyer、Catherine Jeunesse、Dominique Matt
DOI:10.1039/b101369f
日期:——
R1 = (R)-CH2C(O)NHCMe(Ph)H, R2 = (R)-CH2C(O)NHCMe(Ph)H, 10) have been synthesised. The enantiomericallypure calixarenes 7, 8 and 10 having an AABC substitution pattern are inherently chiral. Reaction of the latter three diphosphines with [Pd(2-Me-allyl)(THF)2]BF4 (THF = tetrahydrofuran) afforded the chelatecomplexes [Pd(2-Me-allyl)(diphosphine)]BF4 11–13, respectively, while reaction with [Rh(NBD)(THF)2]BF4
一系列杯[4]芳烃带有两个磷侧基p -Bu吨-calix [4]芳烃- 25,26- [CH 2 P(O)PH 2 ] 2 -27-(OR 1)-26-( OR 2)(R 1或2 = CH 2 CO 2 Et,R 2或1 = H,2 ; R 1 = R 2 = CH 2 CO 2 Et,3 ; R 1或2 = C(O)胆固醇基,R 2或1 = H,4 ; R 1 = R 2 = C(O)胆固醇基,5; [R 1或2 =([R)-CH 2 C(O)NHCMe(PH)H,R 2或1 = H,6)和p -Bu吨-calix [4]芳烃- 25,26-(CH 2 PPH 2)2 -27-(OR 1)-28-(OR 2)(R 1 =(R)-CH 2 C(O)NHCMe(Ph)H,R 2 = H,7 ; R 1 =(R) -CH 2 C(O)NHCMe(PH)H,R 2 =森达3,8