89116-45-0

Upstream product

• 89116-40-5 Toluene-4-sulfonic acid 3-((E)-hexa-3,5-dienyl)-4,4-dimethyl-2-oxo-cyclopentylmethyl ester 
• 89116-44-9 [(1S,2R,5R)-6,6-Dimethyl-1-(2-methyl-[1,3]dioxolan-2-ylmethyl)-8-oxo-bicyclo[3.2.1]oct-2-yl]-acetic acid methyl ester 
• 85083-98-3 (4aS,7R,9aR)-3,6,6-Trimethyl-2-trimethylsilanyloxy-1,4,5,6,7,8,9,9a-octahydro-4a,7-methano-benzocyclohepten-10-one 
• 85083-92-7 2-methoxycarbonyl-4,4-dimethyl-5-(3,5-hexadienyl)-cyclopentanone 
• 85083-95-0 (1R^*,9R^*)-10,10-dimethyl-12-oxo-tricyclo<7.2.1.0^1.6>dodec-5-en-4-one 
• 85083-97-2 (1R^*,3R^*,6R^*,9R^*)-3,10,10-trimethyl-12-oxo-tricyclo<7.2.1.0^1,6>dodec-4-one 
• 85083-96-1 (3S,4aR,7R)-3,6,6-Trimethyl-3,4,6,7,8,9-hexahydro-5H-4a,7-methano-benzocycloheptene-2,10-dione 
• 85083-90-5 <1R^*,6S^*,9R^*>-10,10-dimethyl-12-oxo-tricyclo<7.2.1.0^1,6>dodec-4-ene 
• 60585-44-6 methyl 4,4-dimethyl-2-oxocyclopentanecarboxylate 
• 51694-22-5 ortho-nitrophenyl selenocyanate 
• 89116-30-3 (1S,2R,5R)-2-(2-Hydroxy-ethyl)-6,6-dimethyl-1-(2-methyl-[1,3]dioxolan-2-ylmethyl)-bicyclo[3.2.1]octan-8-one 
• 89116-43-8 [(1R,2S,5S)-6,6-Dimethyl-8-oxo-1-(2-oxo-propyl)-bicyclo[3.2.1]oct-2-yl]-acetic acid 
• 89116-29-0 (1S^*,2R^*,5R^*)-1-(2-oxopropyl)-2-(methoxycarbonylmethyl)-6,6-dimethyl-bicyclo<3.2.1>octan-8-one 
• 89116-28-9 2-((E)-Hexa-3,5-dienyl)-5-hydroxymethyl-3,3-dimethyl-cyclopentanol 

Relevant academic research and scientific papers

SESQUITERPENE LACTONES. A TOTAL SYNTHESIS OF (+/-) QUADRONE

Two routes towards (+/-) quadrone (1), via an intramolecular Diels-Alder reaction have been studied.The cycloaddition of 5 failed, probably because of prohibitive strain.In the alternative approach, the key step afforded a mixture of endo- and exo-adducts