Here are a few tables containing the important information for interconversion of organic functional groups based on the OCR specification. These are useful for synthesis questions, including multi-step reaction pathways. Many students find these simple binary interconversions easier to revise than mind maps, they can be worked on by the cover-recall-reveal method. I couldn’t find up-to-date information anywhere in a table format, so I made my own.
I cross-referenced the reagents and conditions with the most recent (2017-) mark schemes for each test specification. Not all reactions have come up so far and not all the most recent mark schemes have been released, so the tables are a work in progress. If you are using these tables as a guide, especially if you are studing a different test specification, you should check the reagents and conditions against more recent past papers because they differ, it is largely a matter of whim which method the examiners expect when more than one set of conditions can produce the product.
Some reactions are gaseous or do not require a solvent, for others the solvent is important to either dissolve the reagents or prevent the reagents from reacting with the solvent, for example the violent reaction between acyl chlorides and water. In these cases, even if the solvent isn’t needed on the mark scheme for a synthesis question, it is potentially important in experimental design or evaluation questions, so think carefully about these solvents. Where there is ambiguity in the potential solvent, reagent or condition that the examiners might expect, I have left a question mark (for now!)