I would agree that there is a big gap between 'textbook chemistry' and hands-on synthetic chemistry. The textbooks generally give very little detail, while synthetic papers assume that the reader is fluent in many techniques and reagents. If you have access to a chemical search engine like scifinder or reaxys, it is helpful to plug in some of the reagents or structures to find similar reactions. For example, there are many different kinds of carbodiimides used for amide coupling, but they all work in essentially the same way. Also, different journals require different levels of detail in their experimental sections, so it helps to check different journals.