A) INTRODUCTION: 1. TRIAZOLIDIN(THI)ONES - GENERAL INTRODUCTION
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A1) Triazolidin-3-(thi)ones Y = O / (S)
General Introduction

REACTION OVERVIEW



Triazolidin-3-ones (2, Y = O) and -3-thiones (2,Y = S) are easily accessible by the CYCLOADDITION REACTION of phenylhydrazones (1) and IN SITU GENERATED cyanic acid and thiocyanic acid, respectively. Oxidation of these heterocyclic systems (2) (e.g. with potassium permanganate) induces a reaction cascade that can be envisaged as an OXIDATIVE REARRANGEMENT leading to the formation of triazolin-3-ones (3, Y = O) and triazoline-3-thiones (3, Y = S), respectively.
TOPICS OF:
 A) INTRODUCTION
  A1) Triazolidin(thi)ones - General Introduction
A1.1) Cyanic and Thiocyanic acid
A1.2) The Cycloaddition Reaction of (Thio)Cyanic Acid
A1.3) An Oxidative Rearrangement
 
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