132993-03-4

Upstream product

• 2211-94-1 2,3-epoxypropyl p-methoxyphenyl ether 
• 150059-28-2 4-<(Trimethylsilyl)ethynyl>-1-(4-methoxyphenoxy)-7-(trimethylsilyl)-6-heptyn-2-one 
• 132993-01-2 4-<(Trimethylsilyl)ethynyl>-1-(4-methoxyphenoxy)-7-(trimethylsilyl)-6-heptyn-2-ol 
• 1578-53-6 1,6--1,5-hexadiyne 
• 107-21-1 ethylene glycol 

Relevant academic research and scientific papers

Stereoselective Access to the Basic Skeleton of Tetracyclic Diterpenes via a Sequence of Consecutive , , and Cycloaddition Reactions

Benzocyclobutenes 9a, 9b, 23, and 24, prepared from 1,5-hexadiyne in good yields in a sequence involving annelation and cycloaddition reactions, underwent an intramolecular reaction to afford the basic skeleton of tetracyclic diterpenes phyllocladane and kaurane.The factors governing the stereochemistry of the Diels-Alder reaction have been elucidated.A carbonyl group at C12 favored the kaurane stereochemistry (58:42) whereas acetal or silylether functions at that same position led to a highly (97:3) or totally stereoselective formation of the phyllocladane ring system.