SEARCH Articles Figures Tables 1,2 -Oxazole, structural parameters Diels-Alder cyclisation with ethylene 1.2- Bis ethylenes Diels-Alder reaction Diels-Alder Reaction 1,3-butadiene with ethylene, concerted Diels-Alder reaction butadiene + ethylene Diels-Alder reaction of oxazole with ethylene Diels-Alder reactions butadiene with ethylene Ethyl 2,4-dimethyl-3-nicotinate Ethylene, Diels-Alder reaction with oxazoles Ethylene Diels-Alder with Ethylene Diels-Alder with butadiene Ethylene, tetracyanoadduct with 7-methylenenorbomadiene Diels-Alder reaction Ethylenes Diels-Alder reaction