Relative Rates between Monohydroboration and Dihydroboration of Alkynes

Relative Rates between Monohydroboration and Dihydroboration of Alkynes 

The studies reveal that the ratio between (Eq. 4.9) and (Eq. 4.10) for terminal alkynes is relatively small, and this ratio for internal alkynes is much larger (Table 4.11) [2] and thus explains the much larger percentage of dihydroboration for terminal alkynes. In fact, the percentage of mono- and dihy- 

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