Angewandte Chemie International Edition
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Communication
Stereodivergent Total Synthesis of Δ9-Tetrahydrocannabinols†
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We are grateful to the ETH Zürich, the Swiss National Science Foundation (200020_152898), and the Swiss Commission for Technology and Innovation (CTI, 15175.1 PFLS-LS) for financial support.
Abstract
All four stereoisomers of Δ9-tetrahydrocannabinol (Δ9-THC) were synthesized in concise fashion using stereodivergent dual catalysis. Thus, following identical synthetic sequences and applying identical reaction conditions to the same set of starting materials, selective access to the four stereoisomers of THC was achieved in five steps.