Benzyl Radical Apr 2026

: Due to the low bond dissociation energy, benzylic positions are highly reactive toward free-radical substitutions, such as bromination using N-bromosuccinimide (NBS) .

The most prominent feature of the ( ) is its exceptional resonance stability . Unlike simple alkyl radicals, the unpaired electron on the benzylic carbon is delocalized over the entire benzyl radical

-system of the benzene ring, making it significantly more stable and easier to form. Key Features of the Benzyl Radical : Due to the low bond dissociation energy,

: The radical can be represented by five resonance structures. The unpaired electron moves from the benzylic carbon to the ortho and para positions of the aromatic ring, effectively distributing the radical character across multiple atoms. Key Features of the Benzyl Radical : The

: Its stability allows it to be a long-lived species in certain environments, such as combustion processes, where it acts as a precursor for soot and polycyclic aromatic hydrocarbons (PAHs).

: Because the resulting radical is so stable, the benzylic C–HC–H bond is unusually weak (approx. ) compared to standard primary ( ) or even tertiary ( C–HC–H

: In organic synthesis, the stability of the benzyl radical is leveraged for site-specific functionalization, such as installing leaving groups or enabling complex cyclization cascades in natural product synthesis. Comparative Stability

Bibliography:

Old Believer Sermon for the 25th Sunday after Pentecost (unpublished)

“Drops From the Living Water”, Bishop Augustinos

“The One Thing Needful”, Archbishop Andrei of Novo-Diveevo – Pp. 146-148

“Commentary on the Gospel of St. Luke”, St. Cyril, Patriarch of Alexandria, Pp. 287-290

“The Parable of the Good Samaritan”, Parish life, Fr Victor Potapov. Also available at http://www.stohndc.org/parables

[1] This homily was transcribed from one given On November 11, 1996 according to the church calendar (11/24 ns), being the Twenty Fifth Sunday after Pentecost, and the day appointed for the commemoration Holy Martyrs Menas of Egypt, Victor and Stephanida at Damascus and Vincent of Spain The Epistle reading appointed is Ephesians Eph 4:1-6, and the Gospel is Luke 10:25-37. There are some stylistic changes and minor corrections made and several footnotes have been added, but otherwise, it is essentially in a colloquial, “spoken” style. It is hoped that something in these words will help and edify the reader, but a sermon read from a page cannot enlighten a soul as much as attendance and reverent worship at the Vigil service, which prepares the soul for the Holy Liturgy, and the hearing of the scriptures and the preaching of them in the context of the Holy Divine Liturgy. In such circumstances the soul is enlightened much more than when words are read on a page.

[2] Luke 8:41-56 (read on the 24^th Sunday after Pentecost)

[3] Luke 10:25

[4] Luke 11:42

[5] The Reading appointed for Martyr Menas and the other martyrs is Matthew 10:32-33,37-38,19:27-30. At the end of the reading, Christ says: “Verily I say unto you, That ye which have followed me, in the regeneration when the Son of man shall sit in the throne of his glory, ye also shall sit upon twelve thrones, judging the twelve tribes of Israel. And every one that hath forsaken houses, or brethren, or sisters, or father, or mother, or wife, or children, or lands, for my name’s sake, shall receive an hundredfold, and shall inherit everlasting life.” (Matthew 19:28-29).

[6] The story of the Rich man and Lazarus is in Luke 16:19-31, and is read on the 16^th Sunday after Pentecost. The rich man, in hell, wanting to save his brothers, has the following discussion with the Holy Prophet Abraham: “I pray thee therefore, father, that thou wouldest send him to my father’s house: For I have five brethren; that he may testify unto them, lest they also come into this place of torment. Abraham saith unto him, They have Moses and the prophets; let them hear them. And he said, Nay, father Abraham: but if one went unto them from the dead, they will repent. And he said unto him, If they hear not Moses and the prophets, neither will they be persuaded, though one rose from the dead.” (Luke 19:27-31)

[7] Luke 10:26-27 (cf. Duet 6:5: “And thou shalt love the LORD thy God with all thine heart, and with all thy soul, and with all thy might.”

[8] Mark 12:31

[9] John 13:34-35

[10] Luke 10:28

[11] Cf. Matthew 18:22. This expression, “seventy times seven” is an indication of an infinite number.

[12] Luke 10:29

[13] Luke 10:30

[14] Psalm 48:1-2

[15] Luke 10:31-32

[16] Luke 10:33

[17] Luke 10:34

[18] The Gospel for the 24^th Sunday after Pentecost, read the preceding week, is Luke 8:41-56. It tells the story of the healing of the woman with an issue of blood, and the raising of Jairus’ daughter.

[19] John 14:2-3

[20] John 15:14-17

[21] Matthew 11:29-30

[22] Matthew 7:13-14

[23] Matthew 7:21

[24] Matthew 10:32-33

[25] Luke 10:35

[26] Cf. 1 Cor. 3:6 “I have planted, Apollos watered; but God gave the increase.”

[27] Cf. Mark 9:41 “For whosoever shall give you a cup of water to drink in my name, because ye belong to Christ, verily I say unto you, he shall not lose his reward.”