The Behavior of Ketene toward Acetals, Hemiacetal Chlorides, Acylals

By Charles D. Hurd and Raymond D. Kimbrough, Jr.1. Received June 30, 1960. Ketene reacts not only with acetals and hemiacetal chlorides if catalyzed b...
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236

CHARLES

Vol. s3

D. HURDA N D RAYMOND D. KIMBROUGH, JR.

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or about twice that when = 0". In the H-CIIIobserved J 1 , 4 would depend steeply on the relative CIII-H case, two situations may be distinguished : populations of the conformers V-VII. when a formal double bond joins the carbons, 4 can H H\C,*,H H\C,,,CH3 assume only the values 0" and 180', and J i i i , i i r then possesses values of about 10 and 17 c.P.s., H)c=c(H'cITl H H)C=C