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Preparation of Esters 4, Silyl Ether 5, and Siloxanes 7.
| m, n | ester 4 (yield, %)a | silyl ether 5 (yield, %)a | siloxane 7 (yield, %)a |
|---|---|---|---|
| 1, 1 | 4a (79) | 5a (93) | 7b (87) |
| 2, 0 | 4b (72) | 5b (79) | 7b (89) |
| 1, 0 | 4c (76) | 5c (89) | 7c (81)b |
| 2, 1 | 4d (70) | 5d (90) | 7d (84) |
| 3, 0 | 4e (76) | 5e (95) | 7d (83) |
| 3, 1 | 4f (72) | 5f (91)b | 7f (76) |
Yields of analytically pure material.
Yields of chromatographically homogeneous material.
