The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Physiochemical Determinations at High Pressures by Optical Methods》. Authors are Wahl, Walter.The article about the compound:2,3-Dibromopropionic acidcas:600-05-5,SMILESS:O=C(O)C(Br)CBr).Synthetic Route of C3H4Br2O2. Through the article, more information about this compound (cas:600-05-5) is conveyed.
The apparatus gives pressures to 4000 kg./cm.2, the pressure bomb is fitted with 2 borosilicate glass windows of the shape of truncated cones, and 20 mm. thick, the base resting upon a flat ring-shaped washer of vulcanized fiber, and are surrounded by a conical mantle of ebonite. The object of these washers and conical packings is to keep the glass constantly surrounded by a half-plastic mass which flows slightly and thus transmits the pressure to the glass evenly. The m. ps. and transition points between different crystallin modifications may be determined at constant pressure by altering the temperature, or at constant temperature by altering the pressure. Crystallization and melting at constant temperature, isothermal crystalline, and isothermal melting, are of special interest, as it is possible to study not only the crystallization, melting and supercooling phenomena more in detail than under ordinary conditions when the transition is affected by temperature change, but it is possible to study the phenomena connected with superheating of the crystalline phase. The diagrams of state of CBr4 and of Ch2BrCHBrCOOH were worked out, using the apparatus
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Reference:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem