68. What is the major organic product resulted from tetrahydrofuran being reacted with excess HBr?
(A) 1,2-dibromobutane
(B) 1,3-dibromobutane
(C) 1,4-dibromobutane
(D) 4-bromobutan-1-ol
(E) 3-bromobutan-1-ol
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統計: A(1), B(2), C(18), D(7), E(0) #1072956
統計: A(1), B(2), C(18), D(7), E(0) #1072956