The Behavior of Ketene toward Acetals, Hemiacetal Chlorides, Acylals

Charles D. Hurd, and Raymond D. Kimbrough Jr. J. Am. Chem. Soc. , 1961, 83 (1), pp 236–240. DOI: 10.1021/ja01462a046. Publication Date: January 1961...
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CHARLES

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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