Medially chloride

Polymerization and Spinning Solvent. Dimethyl sulfoxide is used as a solvent for the polymerization of acrylonitrile and other vinyl monomers, eg, methyl methacrylate and styrene (82,83). The low incidence of transfer from the growing chain to DMSO leads to high molecular weights. Copolymerization reactions of acrylonitrile with other vinyl monomers are also tun in DMSO. Monomer mixtures of acrylonitrile, styrene, vinylidene chloride, medially sulfonic acid, styrenesulfonic acid, etc, are polymerized in DMSO—water (84). In some cases, the fibers are spun from the reaction solutions into DMSO—water baths. 

Cyclopropene acetals (Fig. 10) can be prepared from dichloroacetone (ref. 57). The first step needs 3 equivalents of NaNH2 (the use of a smaller amount of base results in the formation of the acetal of the chlorocyclopropanone), the third equivalent of NaNH2 is consumed by the formation of the sodium salt which can be alkylated (70-77% yield). Cyclopropenes have also been synthesized from allyl chlorides in various solvents (refs. 58-61). Results are summarized in Fig. 10. Methyl cyclopropenes are generally accompanied by 1,3-butadiene. It is to be noted that the use of KNH2 or of a complex base (NaNH2 /t-BuONa) with medially 1 chloride leads to methylene cyclopropane (ref. 62). 

Mechanoreceptors have been identified not only in the ACL but also in the other structures of the knee joint. Zimny et al. demonstrated neural elements in medial menisci obtained at autopsy by staining in bulk, using a modified gold chloride... 

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