Abstract
CONTENTS
I. General outline of the history of the problem 1
II. Group V 2
III. Group VI 5
IV. Group IV 7
V. Spirans with a non-carbon spiro-atom 8
VI. Influence of the asymmetric atom on the optical rotation 8
CONTENTS
I. General outline of the history of the problem 1
II. Group V 2
III. Group VI 5
IV. Group IV 7
V. Spirans with a non-carbon spiro-atom 8
VI. Influence of the asymmetric atom on the optical rotation 8