... II. Behavior of some homologs and derivatives of propenal acetals. Quelet, Raymond; D'Angelo, Jean. Bulletin de la Societe Chimique de France (1967), (5), 1503-11 ... I (R = Et, R1 = Me, R2 = R3 = H) (0.1 mole) was condensed with 0.16 mole EtMgBr by heating 1.5 hrs. ...