Ci-Cn synthon in an overall yield of 21% from /3-keto imide 4.Acknowledgment. Support has been provided by the National Institutes of Health and Merck. A postdoctoral fellowship to G.S.S. from the NIH is gratefully acknowledged. The NIH BRS Shared Instrumentation Grant Program 1 S10 RR01748-01A1 is acknowledged for providing NMR facilities.
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