Pyrrocaine

Pyrrocaine is a local anesthetic drug. The cogency of pyrrocaine is equivalent to lidocaine in blocking the motor nerve and sensory. Pyrrocaine was proven to be somewhat harmless compared to lidocaine. No signs of methemoglobinemia was found while observing. It was considered unsafe for acute porphyria treatment. No evidence is found that it is profitly used now.[1]

Pyrrocaine
Names
Preferred IUPAC name
N-(2,6-Dimethylphenyl)-2-(pyrrolidin-1-yl)acetamide
Identifiers
CAS Number
3D model (JSmol)
ChEMBL
ChemSpider
EC Number
  • 218-642-7
KEGG
PubChem CID
UNII
InChI
  • InChI=1S/C14H20N2O/c1-11-6-5-7-12(2)14(11)15-13(17)10-16-8-3-4-9-16/h5-7H,3-4,8-10H2,1-2H3,(H,15,17)
    Key: OYCGKECKIVYHTN-UHFFFAOYSA-N
SMILES
  • Cc1cccc(c1NC(=O)CN2CCCC2)C
Properties
Chemical formula
 C14H20N2O
Molar mass 232.327
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

History

In the 1960s it was most of the time used as a nerve blocker dental anesthetic and dentists recommended it due to its fast commencement.[1]

Adverse effects

Pyrrocane has very similar side effects on blood pressure and heart rate compared to lidocaine.[2]

Synthesis

Selfsame as lidocaine, albeit interposing pyrrolidine for diethylamine.

Synthesis:[3] Patents:[4][5]

Amide formation between 2,6-Dimethylaniline (1) and Chloroacetyl chloride (2) gives [1131-01-7] (3). Displacement of the remaining halogen by pyrrolidine (4) completed the synthesis of Pyrrocaine (5).

See also

References
  1. "NCATS Inxight: Drugs". drugs.ncats.io. Retrieved 2018-08-07.
  2. Annals of Dentistry. New York Academy of Dentistry. 1983.
  3. Löfgren, Nils; Tegnér, Claës; Takman, Bertil (1957). "Studies on Local Anesthetics. XVI.". Acta Chemica Scandinavica 11: 1724–1737. doi:10.3891/acta.chem.scand.11-1724.
  4. Albert Schlesinger, Gordon Samuel M, U.S. Patent 2,813,861 (1957 to Endo Lab).
  5. Anon., GB 986993 (1965 to Graham Chemical Corp).
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