β Scribed by Moore, C. G. ;Saville, R. W.
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Data presented for a range of vulcanized rubbers prepared under different conditions show that while olefinic unsaturation becomes reduced by vulcanization in the proportion of one double bond for each sulphur atom combined with a C~5~Hβunit, the original H/C ratio of 8/5 is not altered
SULPHIDE FORMATION IN THE REACTION OF SULPHUR WITH POLYISOPRENES PART vr. FACTORS INFLUENCING CYCLIC ## By GEORGE F. BLOOMNELD Cyclic sulphidcs arc to a large extent secondary products of the reamon of primarily-formcd intermolecular polysulphides with polyisoprene hydrocarbon, and undue prolong
Ethylene ketals of the type (I) cyclise in presence of phosphorus pentoxide in pyrid& to give the ketal (II) which on hydrolysis yields l-phenyl-6:7-dimethoxy4oxo-3:4-dihydroisquinob (III). 1-(4-oxo-cyclohexyl)-6:7-dimethoxy-3:4-dihydroisoquinoline (Vlll) and 2-oxo-3-methyl-g:1& dimethoxy-I 2:3:4:6: