Schaefer, WilliamSubramanian, VijayaMyers, Andrew2009-07-271992Schaefer, William P., Vijaya Subramanian, and Andrew G. Myers. 1992. Structure of an 11-membered cyclic silyl enol ether from condensation of methacrolein and a pseudoephedrine-derived O-silyl ketene N,O -acetal. Acta Crystallographica Section C: Crystal Structure Communications C48: 2090-2092.0108-2701http://nrs.harvard.edu/urn-3:HUL.InstRepos:3198690The title compound, (4S,5S,8R, IOZ)-2,2,5,6,8,10-hexamethyl-4-phenyl- 1,3-dioxa-6-aza-2-silacycloun-dec-10-en-7-one, crystallizes with two virtually identical molecules in the asymmetric unit, each with the same absolute configuration. Bond distances and angles are normal; the closest approaches across the ring between non-bonded atoms are all greater than 3.35 .A,. The amide and enol ether groups are planar to within +- 0.06 A.en-USpseudo-ephedrinemethacroleincyclic silyl enol ethern,o-acetalo-silyl keteneJournal Article10.1107/S0108270192006851