Abstract
CONTENTS
I. Introduction 510
II. Catalytic cyclotrimerisation of alkynes 511
III. Syntheses of non-benzenoid cyclic structures 516
IV. Mechanism of cyclisation of alkynes 517
CONTENTS
I. Introduction 510
II. Catalytic cyclotrimerisation of alkynes 511
III. Syntheses of non-benzenoid cyclic structures 516
IV. Mechanism of cyclisation of alkynes 517