KRAUS G. A.; SUGIMOTO H., TETRAHEDRON LETT., 1978, NO 26, 2263-2266
作者:KRAUS G. A.、 SUGIMOTO H.
DOI:——
日期:——
Quinone epoxides. Part VIII. C-acetyl fission and C→O-acetyl migration in reactions of acetylquinone epoxides and related compounds
作者:G. Read、V. M. Ruiz
DOI:10.1039/p19730000368
日期:——
2-acetyl-t-3-bromo-2,3-dihydro-r-2-hydroxy-3-methyl-1,4-naphthoquinone (III; R = Me) is catalytically reduced. 3-Acetyl-3,4-dihydro-t-3,c-4-dihydroxy-r-2-methylnaphthalen-1 (2H)-one (IX; R = Me), which is also formed in the latter reaction, undergoes a major conformational change on transferring from dimethyl sulphoxide to chloroform solution. The stereospecific formation of this compound and its lower homologue and
当在乙酸中用溴化氢处理2-乙酰基-1,4-萘醌环氧化物(I; R = H)时,乙酰基会丢失,而3-甲基同系物(I; R = Me)中的乙酰基会丢失在这些条件下保留。然而,当通过催化氢化将化合物还原时,只有后者的环氧化物中的乙酰基丢失。当将2-乙酰基-r -2,3-环氧-3; 4-二氢-c -4-羟基萘-1(2 H)-one(II; R = H)处理无水时,会发生C → O-乙酰迁移当使用2-乙酰基-t -3-溴-2,3-二氢-r时,观察到溴化镁和乙酰基的损失或C → O迁移-2-羟基-3-甲基-1,4-萘醌(III; R = Me)被催化还原。3-乙酰基-3,4-二氢-t -3,c -4-二羟基-r -2-甲基萘-1(2 H)-一(IX; R = Me),它也在后面的反应中形成,从二甲基亚砜转移到氯仿溶液时,构象发生重大变化。该化合物的立体定向形成及其较低的同系物和化合物(I; R = H),(I;