Coconut Pineapple Bread

sweetened shredded coconut 1/2 cup (1 stick) unsalted butter, room temperature 1 1/2 cups all-purpose flour 1/2 teaspoon baking soda 1/2 teaspoon salt 1 cup sugar 3 large eggs 1 cup sour cream 1 can (20 ounces) pineapple chunks in juice, drained well