Preparation and Deamination of 1,3-Amino Alcohols 4057 Analytical Method.-The product from each cleavage reaction was carefully rectified to remove the lower boiling alcohol. The end-run fractions were analyzed quantitatively by their infrared spectra by a slight modification of the technique described previously.1 In the case of a mixture of 3-ethoxy-l, 1, l-trifluoro-2-butanol (VII) and 3ethoxy-4,4,4-trifluoro-2-butanol (IX), a base line was drawn across absorption minima characteristic of both spectra at 6.05 and 13.35 µ. A calibration curve was established on the basis of the ratio of the distance measured from the base line to the absorption minimum at 10.3 µ and to the curve at 11.5 µ. The latter point is an absorption minimum for VII and an absorption maximum for IX. The calibration data are summarized in Table II.

A typical duplicate run yielded 52.5% of VII, b.p. 94-97' (0.10 mm.), 71% 1.4853. E. Proof of Structure for the Cyclic Formal of cis-3,a-Dihydroxycyclohexylmethanol (IV). 1. Methylation of 5-Hydroxymethylhexahydrobenzo-cis-1,3-dioxole (VII) .-In a microreaction flask waa heated 0.6 g. (0.026 g.-atom) of sodium metal in 30 ml. of toluene. To the sodium at reflux was added dropwise over 45 min. a solution of 4.00 g. (0.0254 mole) of VI1 in 20 ml. of toluene (Nz atmosphere). The formation of the alkoxide waa allowed to proceed overnight. After 14 hr., dimethyl sulfate, 3.2 g . (0.025 mole) in 10 ml. of toluene, waa added over 15 min. and the reaction mixture allowed to reflux 2 hr. Methanol, 10 ml., waa added and the resulting toluene solution washed with dilute ammonia water and dried over anhydrous sodium sulfate. After removal of the solvent the residue waa distilled. One main fraction was collected, 3.0 g. (73q;b yield), of 5-methoxymethylhexahydrobenzo-cis-l,3-dioxole, b.p. 58' (0.1 mm.), n * '~ 1.4605.Anal. Calcd. for CoHieOj: C, 62.76; H, 9.34. Found: C , 62.45; H, 9.37. 2. Hydrolysis of the Methylated Formal of IV and Determination of 1,2-Glycol Content.-A 0.2811-g. sample of the methylated formal of IV, 50 ml. of water, and 5 drops of concentrated HC1 were heated on a steam bath overnight. The reaultant homogeneous solution waa diluted quantitatively to 100 ml. and the concentration of 1,2-glycol structure determined by periodic acid titration.' Aliquota of the hydrolyzed glycol took up 98-110% of the theoretical amount of periodic acid after a 1-hr. reaction time a t 25'.Acknowledgment.-The trans-hexahydrobenzo-l,3dioxole wm synthesized for the first time by Dr. Newman M.Propanesultam has been prepared by addition of thiolacetic acid to allyl chloride, oxidation of the adduct with aqueous chlorine to 3-chloropropanesulfonyl chloride, reaction with ammonia, and cyclization of the resulting 3chloropropanesulfonamide in alcoholic base. Chromatographically pure propanesultam had m.p. 23.1-23.2', b.p. 156-157 (2 mm.), n% 1.4826; the N-benzoyl derivative melted a t 171-172'. Polymerization of propanesultam of 99.17, purity has been investigated using a variety of catalysts. Basic catalysts such aa sodium hydride, sodium and potassium hydroxides, potassium phenoxide, or tetramethylguanidine are effective in producing polymer of high molecular weight, m.p. 257-260°, [ q ] 0.77 dl./g., particularly when used with an N-alkane-or N-arenesulfonyl-l,3-propaneaultam aa cocatalyst, as for example, N-(p-toluenesulfonyl)-1,3-propanesultam.Octadecylamine hydrochloride, aniline hydrochloride, picric acid, p-toluenesulfonic acid, mesitylenesulfonic acid, and benzenesulfonyl chloride effected polymerization, but only polymer of low molecular weight waa produced.Lewis acids were ineffective under a variety of conditions.

No abstract

3, 9‐Dichloro‐2, 4, 8, 10‐tetraoxa‐3, 9‐diphosphaspiro[5. 5]undecane‐3,9‐disulfide (I), has been synthesized by treating a dimethylacetamide solution of 2, 4, 8, 10‐tetraoxa‐3,9‐diphosphaspiro[5. 5]undecane‐3, 9‐disulfide (III) with carbon tetrachloride. A number of other known methods for converting dialkyl phosphorothioites to thiophosphorochloridates were also applied to III, but all failed to produce I. Chlorination of either I or III gave an acyclic product, 4, 4‐bis(chloromethyl)‐1, 1, 7, 7‐tetrachloro‐2, 6‐dioxa‐1, 7‐di‐phosphaheptane‐1, 7‐dioxide (IV), in nearly quantitative yield. The same compound was also obtained by the previously known method of chlorinating 3, 9‐dichloro‐2,4,8,10‐tetraoxa‐3, 9‐diphosphaspiro[5.5]undecane (II). The treatment of pentaerythritol with phosphorus pentachloride gave IV in minor amount along with a 25% yield of 4,4‐bis‐(chloromethyl)‐1‐chloro‐2, 6‐dioxa‐1‐phosphacyclohexane‐1‐oxide (VII). The hydrolysis of I in heated aqueous sodium carbonate gave, after acidification, 3,9‐dihydroxy‐2,4,8,10‐tetraoxa‐3, 9‐diphosphaspiro[5. 5]undecane‐3, 9‐disulfide (VIII). A number of derivatives were prepared by reaction of I with phenoxides and amines. The corresponding thio‐phosphorofluoridate XI was prepared by treatment of I with potassium fluoride in dioxane.

No abstract