MLchartDataset catalogue

Pseudo bases

Term · Chemistry · MLC-T-CHM-009624

Covalent hydroxy compounds that react with acids to form salts by losing water, with a rearrangement of the bonding that makes the process more than a simple proton transfer. Typical cases are the carbinol forms of triarylmethane dyes and the 2-hydroxy-1,2-dihydro adducts that hydroxide forms with N-alkylpyridinium or N-alkylquinolinium cations. The colourless carbinol of crystal violet turns intensely violet on acidification as the dye cation forms.

Table 1. Record
IdentifierMLC-T-CHM-009624
FieldChemistry
SubjectOrganic and Biomolecular Chemistry
ReferencesPAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1361 (https://doi.org/10.1351/pac199567081307)
See alsoAnhydro bases; Constitution
Record as JSON
{
  "id": "MLC-T-CHM-009624",
  "term": "Pseudo bases",
  "field": "Chemistry",
  "definition": "Covalent hydroxy compounds that react with acids to form salts by losing water, with a rearrangement of the bonding that makes the process more than a simple proton transfer. Typical cases are the carbinol forms of triarylmethane dyes and the 2-hydroxy-1,2-dihydro adducts that hydroxide forms with N-alkylpyridinium or N-alkylquinolinium cations. The colourless carbinol of crystal violet turns intensely violet on acidification as the dye cation forms.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "anhydro bases",
    "constitution"
  ],
  "references": [
    "PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1361 (https://doi.org/10.1351/pac199567081307)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/pseudo-bases/"
}

Record 10,227 of 13,676 in Chemistry terminology (MLC-0109). Request the full dataset.