... E-mail: list@mpi-muelheim-mpg.de. 12 ... Chem. Soc. 2000, 122: 9336; 2b List B. Pojarliev P. Biller WT. Martin HJ. ... Chem. Soc. 2002, 124: 827; 3 List B. Synlett 2001, 1675; 4 An alternative strategy involves products 1 with R 3 = CO 2 H or equivalents such as CH 2 OBn (see ref. ...