pinacols

https://doi.org/10.1351/goldbook.P04674
Tetra(hydrocarbyl)ethane-1,2-diols, $\ce{R2C(OH)–(OH)R2}$, of which the tetramethyl example is the simplest one and is itself commonly known as pinacol (benzpinacol is the tetraphenyl analogue).
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1359 [Terms] [Paper]
Citation: 'pinacols' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.P04674 RIS BibTex EndNote
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