Titlebook: Cis-trãns Isomeric Carotenoids Vitamins A and Arylpolyenes; L. Ƶechmeister Book 1962 Springer-Verlag Vienna 1962 Conjugated system.Isomer.

起来了

Configurational Assignments in Certain Stereoisomeric SetsIn this Chapter an attempt will be made to summarize our knowledge concerning . configurations proposed on the basis of stereo isomerization experiments and to coordinate them with the information gained by total synthesis. The reader will note that the available data are both heterogeneous and fragmentary.

光滑

Cumulenes with Aromatic Terminal GroupsAs is well known, the cumulenes (in German, “Kumulene”) possess . double bonds attached to . + . carbon atoms, the simplest representatives being allenes (propadienes) C=C=C and butatrienes C=C=C=C. They can be converted into . polyenes (pp. 58, 62,188).

玷污

结合

exclusice

ALLAY

丛林

outrage

辩论

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