Hml. Davies et al., Catalytic asymmetric synthesis of syn-aldol products from intermolecular C-H insertions between allyl silyl ethers and methyl aryldiazoacetates, ORG LETT, 1(3), 1999, pp. 383-385
[GRAPHICS]
Rh-2(R-DOSP)(4)-catalyzed decomposition of methyl aryldiazoacetate in the p
resence of allyl silyl ethers results in a regioselective C-H insertion; Th
e resulting beta-siloxy esters are formed with high enantioselectivity (74-
92% ee) and diastereoselectivity (96-98% de) when trans-disubstituted allyl
silyl ethers are used as substrates.