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Question 6.IT.1: The total number of β-hydroxycarbonyl compounds which can be......

The total number of β-hydroxycarbonyl compounds which can be got by the aldol condensation of CH_3CHO and CH_3CH_2 -CHO is ___.

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(1) \stackrel{\alpha}{ C}H _3 CHO + CH _3 C\stackrel{\alpha}{ H} _2 CHO \stackrel{ OH^-}\longrightarrow

1. CH _3 CH ( OH ) CH _2 CHO

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