title: Synthesis of highly substituted oxetanes via [2+2] cycloaddition reactions of allenoates catalyzed by a guanidine Lewis base.
abstract: The first synthesis of highly substituted 3-alkyl-oxetan-2-ylidenes from allenoates was developed by using the bicyclic guanidine 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as an exceptionally active nitrogen Lewis base catalyst.
authors: Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany. philipp.selig@rwth-aachen.de
authors: Philipp
authors: P
authors: Selig
authors: Aleksej
authors: A
authors: Turočkin
authors: William
authors: W
authors: Raven
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry*; D002384:Catalysis; D060326:Chemistry Techniques, Synthetic; D004988:Ethers, Cyclic / Q000138:chemical synthesis* / Q000737:chemistry*; D019791:Guanidine / Q000737:chemistry*; D058115:Lewis Bases / Q000737:chemistry*
chemical_list: D002264:Carboxylic Acids; D004988:Ethers, Cyclic; D058115:Lewis Bases; C005287:oxetane; D019791:Guanidine