I think what you are talking about is the lowest location rule or the first-point difference rule. www.adichemistry.com/organic/basics/iupac1/organic-iupac-nomenclature.html STUDY BOARD To work with the first rule of difference, try the approach below based on the comparison of 1,1,2 vs 1,2,2: The way you stated the rule can sometimes be misleading or even wrong. In all cases, IUPAC recommendations are over 1500 pages long. Therefore, you should be careful when applying a simplified or abbreviated version of the BOM rules. It is useful to see the similarities between the rules of alkenes and alkynes and between the rules of alcohols and functional carbonyl groups. Ethers and amines have their own naming procedures. This definition appears very rarely and can be found in the following categories of acronyms: Rule 2. Names of the substituent, the other carbonaceous branch (PREFIX+OXY) On the left side – 3,4,9 and the sum is 3+4+9 = 16 Note: The mother chain is the longest continuous carbon chain. Therefore, the smallest sum of locators can lead to incorrect results. The lowest set of locators is defined as the set that has the lowest term at the first point of difference in term-by-term comparison with other location sets, each quoted in ascending order of value; For example, the localization set â2,3,5,8â is less than â3,4,6,8 and â2,4,5,7â. (â¦) This book is author`s notes that they used during their preparation and consists of tips and concepts.
Each question in this book is treated with the concept and also has a review for students and the type of solution. This book also includes CLEAR CRYSTAL CONCEPT (CCC) and CONCEPT BUILDING QUESTION (CBQ), which is an important question and comes from the previous year by IIT and NEET. 90% of questions come every year to NEET and 60% to IIT (safe sorting). This book is better than other books because this book is a collection of multiple notes, coaching lecture notes, a foreign-author`s book. So count on this book to get good grades, i.e. 90% notes in organic chemistry. There are many websites, blogs, and other online sources where you can dig deeper into the topic. chemwiki.ucdavis.edu/Organic_Chemistry/Hydrocarbons/Alkanes/Properties_of_Alkanes/Cycloalkanes/Nomenclature_of_Cycloalkanes. And here is the page where you can learn by looking online-leah4sci.com/naming-organic-compounds-iupac-nomenclature/. You can also get a lot of videos on YouTube. So go for these sources. There are three methyl groups as substituents, to which numbers can be assigned depending on whether the count starts from the left or right side of the chain.
It is important to note that to name an organic compound, you need to be able to easily identify functional groups: alkane, alkene, alkyne, arena, alcohol, ether, amine, aldehyde, ketone, carboxylic acid, ester, amide. ÐÐ3/4Ð»ÑÑÐ ̧ÑÑ Ð¿ÐμÑÐ°ÑÐ1/2ÑÑ Ð²ÐμÑÑÐ ̧Ñ ÑÑÐ3/4Ð¹ ÐºÐ1/2Ð ̧Ð³Ð ̧ Rule 2. Name and function of substituents. The author is currently an MBBS graduate. Qualified AIIMS, AIPMT, STATE PMT, JIPMER and JEE. Also qualified in TOEFL, SAT, etc. Has the experience of being a guide and mentor to countless aspiring PMTs who have sought guidance on a regular basis. The author is also a martial arts player and also likes to help disadvantaged students in their studies. This book is based on the author`s notes used by them when preparing for the entrance exam.
For example, for 2,7,8-trimethyldecane, the smallest sum of locanants would give the wrong name â3,4,9-trimethyldecaneâ, since $2+7+8=17 > 3+4+9=$16.