4.7 Article

Evaluating Thiourea Architecture for Intramolecular [2+2] Photocycloaddition of 4-Alkenylcoumarins

Journal

ADVANCED SYNTHESIS & CATALYSIS
Volume 356, Issue 13, Pages 2763-2768

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201400677

Keywords

asymmetric photoreactions; hydrogen bonding photocatalysis; organophotocatalysis; photochirogenesis; thiourea photocatalysis

Funding

  1. NDSU
  2. NSF [CHE-1213880, CHE-1111392]
  3. Arthur C. Cope Scholar Award
  4. NDSU graduate school
  5. UGC, India
  6. Direct For Mathematical & Physical Scien
  7. Division Of Chemistry [1111392] Funding Source: National Science Foundation
  8. Direct For Mathematical & Physical Scien
  9. Division Of Chemistry [1213880] Funding Source: National Science Foundation

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The efficiency of [2+2] photocycloadditions of 4-alkenylcoumarins was evaluated with various thiourea skeletons to develop thiourea-based catalysts for promoting photochemical reactions. Our results indicate that the excited state chemistry is dependent on the nature of the thiourea catalyst employed to activate the photoactive substrate.

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