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The compound is prepared by the chlorsulfonation of benzene: C 6 H 6 + 2SHO 3 SCl → C 6 H 5 SO 2 Cl + HCl + SO 3. Benzenesulfonic acid is an intermediate in this conversion. Diphenylsulfone is a side product. Benzenesulfonyl chloride can also be prepared by treating benzenesulfonate salts with phosphorus oxychloride. [2]
Benzenesulfonic acid (conjugate base benzenesulfonate) is an organosulfur compound with the formula C 6 H 6 O 3 S.It is the simplest aromatic sulfonic acid.It forms white deliquescent sheet crystals or a white waxy solid that is soluble in water and ethanol, slightly soluble in benzene and insoluble in nonpolar solvents like diethyl ether.
C 6 H 5 SO 2 Cl + Na 2 SO 3 + H 2 O → C 6 H 5 SO 2 H + NaCl + NaHSO 4. Many other methods have been reported for production of sulfinic acids such as the use tin(II) chloride, or the Grignard reagent with sulfur dioxide. [4] The preparation of sulfinic acids by the oxidation of thiols is difficult due to overoxidation.
The original synthesis of PAES involved electrophilic aromatic substitution of an diaryl ether with the bis (sulfonyl chloride) of benzene. Reactions typically use a Friedel-Crafts catalyst, such as ferric chloride or antimony pentachloride: n O(C 6 H 5) 2 + n SO2Cl2 → {[O(C 6 H 4) 2]SO 2} n + 2n HCl
This produces 2,4,6-trichlorobenzoic acid, which can then be refluxed in thionyl chloride to form 2,4,6-trichlorobenzoyl chloride. [ 4 ] Since 2,4,6-trichlorobenzoic acid is produced as a by product of the Yamaguchi esterification process, it can be refluxed again to recreate 2,4,6-trichlorobenzoyl chloride.
Trichloromethanesulfenyl chloride is a stable sulfenyl chloride. Sulfenyl chlorides are typically prepared by chlorination of disulfides: [2] [3]. R 2 S 2 + Cl 2 → 2 R−SCl. This reaction is sometimes called the Zincke disulfide reaction, in recognition of Theodor Zincke.
C 6 H 5 CH 3 + C 6 H 6 → C 6 H 5 −C 6 H 5 + CH 4. The other principal route is by the oxidative dehydrogenation of benzene: 2 C 6 H 6 + ½ O 2 → C 6 H 5 −C 6 H 5 + H 2 O. Annually 40,000,000 kg are produced by these routes. [13] In the laboratory, biphenyl can also be synthesized by treating phenylmagnesium bromide with copper(II) salts.
4-Phenylfentanyl is an opioid analgesic that is a derivative of fentanyl.It was developed during the course of research that ultimately resulted in super-potent opioid derivatives such as carfentanil, though it is a substantially less potent analogue. 4-Phenylfentanyl is around eight times the potency of fentanyl in analgesic tests on animals, but more complex 4-heteroaryl derivatives such as ...
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