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2- Allyl-5-isopropyl-3,6-dimethoxy-2 -2,5-dihydropyrazine

Allyl-5-isopropyl-3,6-dimethoxy-2,5-dihydropyrazine (59) gave 2-allyl-2-(2-hydroxyethyl)-5-isopropyl-3,6-dimethoxy-2,5-dihydropyrazine (60) (BuLi, THF—C6H14, -78°C, A, 45 min then (CH2)20 [, BF3.Et20 j, -78°C, 1 h 60%).1615... [Pg.87]

Allyl-5-isopropyl-3,6-dimethoxy-2-(prop-2-ynyl)-2,5-dihydropyrazine (315) gave a separable mixture of 8-isopropyl-7,10-dimethoxy-2,3-dimethylene-6, 9-diazaspiro[4.5]deca-6,9-diene (316) and 3-isopropyl-2,5-dimethoxy-10-methylene-l,4-diazaspiro[5.5]undeca-l,4,8-triene (317) [Pd(OAc)2, PPh3, PhH, A, 20°C, 24 h 32 and 24%, respectively, after separation] also analogous reactions.1610... [Pg.127]

Allyl-2-(2-hydroxyethyl)- (137, R = CH2OH) gave 2-allyl-2-formylmethyl-5-isopropyl-3,6-dimethoxy-2,5-dihydropyrazine (137, R = CHO) [Me2SO, (COCl)2, CH2C12, 60°C, A, 5 min then substrate J, - 60 — - 15°C,... [Pg.212]

Allyl-5-isopropyl-3,6-dimethoxy-2-(prop-2-ynyl)-2,5-dihydropyrazine (315)... [Pg.127]

See other pages where 2- Allyl-5-isopropyl-3,6-dimethoxy-2 -2,5-dihydropyrazine is mentioned: [Pg.87]   


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