【摘 要】
：
There is a classic experiential rule about1,2-diolRCR1(OH)CR1(OH)R(R1=H or methyl),that is,the proton chemical shift of theα-R1group at the hy-droxyl group in
【出 处】
：
Chemical Research in Chinese Universities
论文部分内容阅读
There is a classic experiential rule about1,2-diolRCR1(OH)CR1(OH)R(R1=H or methyl),that is,the proton chemical shift of theα-R1group at the hy-droxyl group in thedl-isomer,in general,appears in ahigher field withca.δ=0·1—0·2than the one in themeso-is
There is a classic experiential rule about 1,2-diolRCR1 (OH) CR1 (OH) R (R1 = H or methyl), that is, the proton chemical shift of the α-R1group at the hy- droxyl group in thedl-isomer, in general, appears in ahigher field withca.δ = 0 · 1-0 · 2than the one in themeso-is
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