... A. M. Echevarren, J. K. Stille, Tetrahedron 1989, 45,9792 36 Chapter 6 62. 63 . 64 . 65 . 66 . 67 . 68 . 69 .70.71.72.73.74.75. 76. 77.H C. Zhang, G. D. Daves, Jr., Organometallics 1993, 12, ... 1/1 with228 Chapter 6 It is mentioned in an early paper on the effect of water on Heckvinylations [62 ] that 2,4-dimethoxy-5-iodopyrimidine reacted with 1- (ethoxyethenyl)-tri-n-butylstannane ... of 1-methyl-1-vinyloxirane(Scheme 6. 27) [61 ]. Both the relative amount of the rearranged product and the E/Z ratio were increased in aqueous DMF.210 Chapter 6 these catalysts. However, in the...