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์œ ๊ธฐํ™”ํ•™์‹คํ—˜ 2

[์œ ๊ธฐํ™”ํ•™์‹คํ—˜] Diels-Alder reaction: 1,3-butadiene + maleic anhydride

[์œ ๊ธฐํ™”ํ•™์‹คํ—˜] Diels-Alder reaction: 1,3-butadiene + maleic anhydride 1) ์‹คํ—˜๋ชฉ์  Diels-Alder reaction์„ ์ด์šฉํ•˜์—ฌ 1,3-butadiene์ด maleic anhydride์™€ ๋ฐ˜์‘ํ•˜์—ฌ 4-cyclohexene-cis-1,2-dicarboxylic anhydride์„ ์ƒ์„ฑํ•˜๋Š” ๊ณผ์ •์„ ํ™•์ธํ•œ๋‹ค. 2) ReagentsCAS-number๋ฌผ์งˆ๋ถ„์ž๋Ÿ‰(g/mol)๋ฐ€๋„(g/ml)๋…น๋Š”์ (โ„ƒ)๋“๋Š”์ (โ„ƒ)77-79-23-sulfolene118.151.31465229108-31-6Maleic anhydride98.061.4852.8202106-42-3Xylene (C8H10)106.160.86-47.4139-Celite (SiO2)----110-54-3Hexane8..

SCIENCE/Chemistry. 2022.10.01

[์œ ๊ธฐํ™”ํ•™์‹คํ—˜] ํƒ„์†Œ์–‘์ด์˜จ ์žฌ๋ฐฐ์—ด ์‹คํ—˜/Carbocation Rearrangements: Benzopinacolone

[์œ ๊ธฐํ™”ํ•™์‹คํ—˜] ํƒ„์†Œ์–‘์ด์˜จ ์žฌ๋ฐฐ์—ด/Carbocation Rearrangements: Benzopinacolone 1. ์‹คํ—˜ ๋ชฉํ‘œ Carbocation Rearrangement๋ฅผ ํ†ตํ•ด Benzopinacol์„ benzopinacolone์œผ๋กœ ํ•ฉ์„ฑํ•œ๋‹ค. 2. ์‹คํ—˜ ์ด๋ก  (1) E1 Reaction(Elimination, unimolecular) E1๋ฐ˜์‘์€ ๋‘ ๋‹จ๊ณ„๋กœ ์ด๋ฃจ์–ด์ง€๋ฉฐ, ์ฒซ ๋‹จ๊ณ„๊ฐ€ ๋ฐ˜์‘ ์†๋„ ์ œํ•œ ๋‹จ๊ณ„๋กœ carbocation intermediate๊ฐ€ ๋‚˜ํƒ€๋‚œ๋‹ค. (2) Carbocation rearrangement Carbocation์˜ stability๋Š” 3หš > 2หš > 1หš > CH3X ์ˆœ์„œ๋กœ ํฌ๋‹ค. Carbocation์ด ํ˜•์„ฑ๋œ ํ›„ ๋” ์•ˆ์ •์ ์ธ carbocation์„ ๋งŒ๋“ค๊ธฐ ์œ„ํ•ด์„œ hydride..

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