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The nuclear synthesis of olefins through the ß-bromo ethers has been used in a systematic survey of the hexenes. Ten of the thirteen structurally possible members of this family have been prepared, including those previously unknown. The method is shown to be applicable to the synthesis of monoalkyl, symmetrical and unsymmetrical dialkyl ethylenes. It is believed the method will ultimately prove applicable also to the trialkyl and tetraalkyl ethylenes.The confusion which has existed in the physical constants of the olefins is beginning to disappear. A definite relation is shown to exist between the physical properties and molecular structure of the hexenes. Certain rules have been formulated relating the boiling points, densities and refractive indices of the hexenes to their structure.Eight bromohexyl ethyl ethers, three hexenes and five dibromohexanes are herein described for the first time.

artificial fibers from linear superpolymers 1579 in its physical properties. The behavior of these anhydrides toward aniline is described and discussed. The prefixes a, ft, y and w used above have been adapted arbitrarily to designate the anhydrides of different origins.Wilmington, Delaware