Round 5: Tossup 2
Linkages named for this functional group join the monomers of the 3D printing filament PLA. Compounds with this functional group and acyl (“ace-ill”) chlorides react with [emphasize] two equivalents of Grignard reagent to form tertiary alcohols. Cyclic varieties of these compounds are known as lactones. Examples of these compounds such as triglycerides can be hydrolysed with sodium hydroxide in saponification. Names of these compounds feature the suffix “-oate,” (“oh-ate”) as in methyl propanoate (“pro-PAN-oh-ate”). In a reaction named for Emil Fischer, these compounds are synthesized by refluxing an alcohol with a carboxylic acid. For 10 points, an R-C-O-O-R’(“R-C-O-O-R-prime”) group characterizes what fruit-scented compounds? ■END■
ANSWER: esters [accept Fischer esterification; accept ester linkages; prompt on lactones until read]
<Editors, Chemistry> | Packet E
= Average correct buzz position
Buzzes
Summary
| Tournament | Edition | TUH | Conv. % | Neg % | Average Buzz |
|---|---|---|---|---|---|
| UK (North) | UK | 5 | 80% | 60% | 81.50 |
| UK (South) | UK | 8 | 100% | 50% | 75.75 |
| Northern California | US | 4 | 50% | 100% | 89.50 |
| Southern California | US | 7 | 86% | 29% | 61.33 |
| Eastern Canada (1) | US | 5 | 100% | 0% | 57.40 |
| Eastern Canada (2) | US | 9 | 78% | 67% | 84.00 |
| Florida | US | 4 | 25% | 75% | 99.00 |
| Great Lakes | US | 11 | 82% | 45% | 73.22 |
| Lower Mid-Atlantic | US | 8 | 75% | 25% | 59.67 |
| Upper Mid-Atlantic | US | 1 | 100% | 100% | 99.00 |
| Upper Mid-Atlantic | US | 9 | 56% | 67% | 77.40 |
| Upper Mid-Atlantic | US | 2 | 50% | 50% | 99.00 |
| Midwest | US | 9 | 78% | 78% | 95.57 |
| North | US | 4 | 50% | 0% | 91.50 |
| Northeast | US | 1 | 100% | 0% | 80.00 |
| Pacific | US | 8 | 75% | 25% | 72.17 |
| South Central | US | 5 | 80% | 40% | 72.75 |
| Southeast | US | 10 | 60% | 70% | 81.17 |
| Upstate NY | US | 5 | 60% | 20% | 84.33 |