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HRID 18805Erstellt: 24. Oktober 2026

3-Methylbenzyl alcohol → (3-Methylbenzyloxy)acetic Acid Ethyl Ester

https://huagongshe.com/de/reaction/18805

Reaktionsgleichung

Beteiligte Stoffe

RolleNameHCIDEinwaage
Edukt3-Methylbenzyl alcoholHCID 11476—
EduktEthyl diazoacetateHCID 12192—
KatalysatorAcetic acid, rhodium salt (4:2)HCID 423677—
LösungsmittelDichloromethaneHCID 6344—
LösungsmittelHeptaneHCID 8900—
Produkt(3-Methylbenzyloxy)acetic Acid Ethyl EsterHCID 68569289101,9%

Reaktionsschritte

To a solution of 3-methylbenzyl alcohol (1.08 g, 10.0 mmol) in dichloromethane (20 mL) is added rhodium (II) acetate dimer (10 mg) followed by ethyl diazoacetate (0.95 mL, 9.0 mmol). The reaction mixture is stirred at RT for 30 min. The reaction mixture is diluted with heptane, filtered through Celite, and the filtrate is evaporated and the residue is vacuum distilled at 150° C. to give 1.91 g of the product 396. 1H NMR (CDCl3) δ 7.3-7.1 (m, 4H), 4.60 (s, 2H), 4.23 (q, 2H), 4.09 (s, 2H), 2.36 (s, 3H), 1.29 (t, 311); MS: m/z 209 (M++1).

Herkunft & Nachweise

DOI10.6084/m9.figshare.5104873.v1
PatentnummerUS07741493B2
Quelldatensatzuspto-grants-2010_06
ORD IDord-5290beb9104f4659ac77188b00c8bd54
Quellennotizuspto-grants-2010_06