Goldberg, Daniel R. published the artcileThe tandem intramolecular Diels-Alder reaction, SDS of cas: 4141-48-4, the publication is Tetrahedron Letters (1993), 34(50), 8003-6, database is CAplus.
The tandem intramol. Diels-Alder (TIMDA) reaction of ketone I is reported to give tetracyclic ketone II. The reaction proceeds under mild conditions (BF3¡¤Et2O, 0¡ãC) and affords two tetracyclic products diastereoselectively. TIMDA substrate I is prepared in a convergent manner from 1,5-pentanediol.
Tetrahedron Letters published new progress about 4141-48-4. 4141-48-4 belongs to catalysis-chemistry, auxiliary class Aryl phosphine ligand,Mono-phosphine Ligands, name is Allyldiphenylphosphine oxide, and the molecular formula is C15H15OP, SDS of cas: 4141-48-4.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia