1 -( decyloxy ) - 4 - ethynylbenzene ( 5 c ) 1 H NMR ( CDCl 3 , 300 ㎒): δ 7 . 47 - 7 . 44 ppm ( d , 2 H , J = 8 . 79 ㎐), 6 . 87 - 6 . 84 ppm ( d , 2 H , J = 8 . 81 ㎐), 3 . 99 - 3 . 95 ppm ( t , 2 H , J = 6 . 55 ㎐), 1 . 81 ppm ( m , 2 H ) , 1 . 32 ppm ( m , 14 H ) , 0 . 94 - 0 . 91 ppm ( t , 3 H , J = 6 . 95 ㎐)